Don't want to build it? Someone already did.

AGPL-3.0 mailing-list and newsletter manager with public signup forms and double opt-in; it has no referral ranking.

One inbox for email, website chat, WhatsApp and social messages, with phone apps; MIT core, enterprise extras licensed separately.

CRM whose objects, fields and views can be defined in code; mostly AGPL-3.0, with some files under a commercial licence.

GPL marketing-automation suite with campaigns, forms and segments; a PHP app that needs a database, cron and real upkeep.

Newsletter campaigns and signup forms; sends through your own SMTP, SES, Sendgrid, Mailgun or Postmark. A paid hosted version exists.

Publishing platform with memberships and newsletters; a self-hosted install sends bulk mail through Mailgun.

Full help desk with email, chat, a knowledge base and reports; the Docker setup brings PostgreSQL, Redis and Elasticsearch.

A PHP help desk laid out much like Help Scout and free to self-host; extras such as the knowledge base and workflows are paid modules.

Projects, cycles and modules with list, board, calendar, spreadsheet and Gantt views; the Community Edition is free to self-host.

MIT-licensed, cookie-free analytics with campaigns, events and revenue views; self-hosted or in its cloud.

Scheduler for many networks with a composer, calendar and API; AGPL-3.0, and you register your own developer app on each network.

The same product under AGPL, run on your own Postgres and ClickHouse. Funnels, revenue goals and SSO are cloud-only, and releases come twice a year.

MIT-licensed Laravel and Vue CRM with custom attributes and email parsing.

The long-running GPL option: PHP and MySQL, much broader than page stats, with more to maintain.

Self-hosted document signing with a field builder, reusable templates and an API.

Open-source signing platform with templates and an API; the hosted free plan covers 5 documents a month.

Open-source survey platform with link, website, in-app and email surveys. Aimed at product feedback rather than general forms; parts of the code sit under a separate license.

Email platform with campaigns, segments and workflows; free to self-host, hosted use is billed per email.

GPL-3.0 PHP appointment scheduler with services, providers, customer pages and calendar sync.

MIT-licensed Laravel scheduler for your own server; Pro and Enterprise editions are sold separately.

The same editor under the Sustainable Use License: free to self-host for internal use, with SSO, Git and other enterprise code under a paid licence.

Open-source design and prototyping platform with real-time collaboration; MPL-2.0, self-hostable with Docker.

MIT community edition of Cal.com with the enterprise features removed; the README calls it personal, non-production use and expects server-admin skills.

Visual app builder with a built-in database and workflows; the community edition is AGPL.

Drag-and-drop internal tool builder with widgets, queries and JavaScript; Apache 2.0, with some team features on paid plans.

GPL-3.0 ERP with full accounting and invoicing; far more than a freelancer needs and a real server to look after.

Low-code builder for forms, tables and approval apps, with its own database and automations; GPLv3 overall.

Tasks, chat, docs and video calls in one workspace; heavier to run, but it covers more of what a team does in Asana and Slack together.

Apache-2.0 visual editor for React code: restyle an element by clicking it or prompt a change with AI.

MIT community version of Bolt: prompt, run, edit and deploy full-stack apps with the LLM provider of your choice.

A long-running project suite with Gantt charts, boards, time tracking and wikis; the Community edition is GPL.

Apache-2.0 offline grammar checker written in Rust that lints in milliseconds, with editor and Obsidian integrations; English only.

The checker itself under LGPL-2.1: run the Java server or a community Docker image and point the browser add-ons at it. No AI rules or premium rule sets; n-gram data is a separate multi-gigabyte download.

AGPL privacy-friendly web analytics, self-hosted or cloud, aimed at a more guided dashboard than Google Analytics.

Project management for people who aren't project managers, with goals, boards, timelines and timesheets.

The same app as source-available code under the Elastic License 2.0: free to run for your own business with the Pro and Enterprise features included; a white-label licence is $40 a year.

Minimal MIT-licensed kanban in PHP with plugins and an API. The README says it is in maintenance mode: expect fixes, not new features.

MIT notepad for three desktop systems that transcribes locally with Whisper or Parakeet and keeps notes in SQLite; sync and cloud sharing are optional paid extras.

AGPL-3.0 visual website builder with a Webflow-style workflow that can be hosted anywhere.

AGPL-3.0 builder for conversational forms with conditional logic, file uploads, webhooks, custom CSS, drop-off analytics and CSV export.

Very light counter: one binary, SQLite or Postgres, and no tracking of personal data.

AGPL-3.0 self-hosted task manager with list, kanban, Gantt and table views; the maker also sells hosting and a Pro edition.

No-code form builder with unlimited forms and submissions, conditional logic, file uploads, embeds and Slack, Discord and webhook integrations. The core is AGPL-3.0; an enterprise directory carries a separate license.

AGPL-3.0 PHP CRM with leads, opportunities, campaigns and cases; needs MySQL, MariaDB or PostgreSQL.

A support desk shipped as a single binary: shared email inbox, canned replies, SLAs and automation rules.

AGPL-3.0 visual editor that outputs static sites, which you can host yourself.

GPL-3.0 hotkey app that sends selected text to a cloud or local language model to proofread or rewrite it in any app.

AGPL-3.0 social management tool with composer, calendar, media library and inbox; a free hosted version exists.

MIT-licensed React and Supabase CRM with contacts, tasks, notes, a deals kanban and email capture by CC.

Site-audit crawler: broken links, redirects, missing tags, duplicate content.

Self-hosted cold email platform with sequences, a unified inbox, a small CRM and warmup across your own mailboxes; runs on Docker Compose. Young project, started in 2026.

Terminal and desktop coding agent that works with most model providers, including local ones.

MIT-licensed hand-drawn style whiteboard for diagrams and wireframes that you can embed or host yourself.

Self-hosted monitor with push-style monitors for jobs that report in, plus 90+ notification services; MIT-licensed.

Records your own screen, camera and audio locally, with a plugin ecosystem; pairs with VDO.Ninja for remote guests. GPL.

Docs, whiteboard and databases in one workspace; the client is MIT-licensed and the backend has its own licence.

Coding agent that runs as a VS Code extension or CLI and asks before each edit and command; bring your own model key.

Desktop app or Docker server for chatting with your own documents through local or hosted models.

Apache-2.0 self-hosted platform that deploys from Git to servers you own, with databases, automatic TLS and preview deployments.

One install with CRM, website builder, email marketing and appointments; several apps and the hosted version are paid.

MIT-licensed Ruby app where agents watch the web and act for you, chained by events and configured through JSON forms.

Open-source assistant for VS Code and JetBrains: chat, edit and autocomplete with models you configure.

MIT-licensed, fully offline speech-to-text: press a shortcut, speak, and the words are pasted into any text field. Whisper and Parakeet V3 models, with GPU acceleration where available.

MIT chat that builds React apps, including by recreating an existing site from its URL; runs on your own model and Firecrawl keys.

Tailors a master resume to each job post with a local or hosted LLM, then exports a PDF and a cover letter.

Agentic coding extension for VS Code and JetBrains with modes for planning, coding and debugging.

No-code automation builder whose community edition is MIT-licensed; enterprise folders are under a commercial licence.

Apache-2.0 flow editor on Node.js for wiring devices, APIs and services; runs on a Raspberry Pi.

MIT-licensed to-do list with time tracking and timeboxing; data stays local unless you add a sync backend.

Local desktop app builder that works with your own model keys or Ollama; the core is Apache 2.0 and the src/pro folder has its own licence.

Symfony-based ticketing with email piping, a knowledge base and a customer portal.

Scripts in Python, TypeScript and other languages turned into webhooks, workflows and UIs; core under AGPL-3.0 with proprietary enterprise parts.

Apache-2.0 status page and alerting tool whose external endpoints take pushed results and flag missing heartbeats.

GPL-3.0 macOS dictation with on-device speech recognition and a local model that cleans up the text; Windows and iOS versions are announced but not out.

Open-source email client for Gmail and other providers with AI features, built to be self-hosted; commits have slowed since May 2026.

BSD-3-Clause cron monitoring server in Django with 25+ integrations; the hosted free plan covers 20 jobs.

Checks whether an address exists without sending mail. Run the backend in Docker on a host with outbound port 25 open.

Open-source HR and payroll for companies that already have an entity in each country; no employer-of-record service and no payouts.

Apache-2.0 diagramming tool with a large shape library; use it in the browser, as a desktop app or from Docker.

GPL-3.0 ERP and CRM with quotes, invoices and payments as modules; broader than invoicing and heavier to run.

AGPL-3.0 web and product analytics that describes itself as a Mixpanel alternative; funnels, cohorts, user profiles and session replay.

MIT-licensed visual builder aimed at teams that plug it into their own React or Next.js code.

Open-source e-signature app with templates and a self-host option; the repo carries an AGPL license with a few exceptions.

GPL-3.0 native macOS 15+ app with offline transcription, per-app modes and a personal dictionary. The source is open; the maker sells a licence for the ready-built app with updates and support.

MIT command-line prose linter that turns writing guidelines into checks in editors and CI, offline; closer to a style linter than a grammar checker.

Git-connected translation server with memory, glossary, checks and reviews; free hosting for libre projects.

Free non-linear video editor for assembling video podcast episodes; GPL.

Hosted, end-to-end encrypted vault with open-source clients and a free tier.

Runs the Kokoro voice model as an OpenAI-compatible speech API in Docker, with timestamps for highlighting; OpenReader can use it.

AGPL-3.0 time tracker that turns billable time into PDF or HTML invoices from configurable templates.

Plain-text double-entry accounting with CSV import rules, standard reports and a small web UI.

Self-hosted board with ideas, votes, statuses and email notifications; runs on Postgres.

Desktop double-entry accounting with customers, vendors, invoices, bills, OFX import and reconciliation; the books stay in a file on your disk.

Translation platform with in-context editing in your running app; Apache-licensed core, some enterprise parts paid.

Accounting and inventory for small businesses with financial statements and an API; AGPL, self-hosted with Docker.

AGPL-3.0 CRM with a kanban deal view, a combined lead and deal page, custom views, and Twilio, Exotel and WhatsApp integrations.

The long-standing open-source survey platform: dozens of question types, branching, quotas, multilingual surveys and SPSS or R exports. The Community Edition is free to self-host.

Learning platform with courses, batches, quizzes and certificates on the Frappe framework.

Self-hosted CLI that finds matching people through a licensed data provider (bring your own key) and emails them from your mailbox.

MIT customer-engagement tool for automated email, SMS and push messages, deployable with Docker Compose; built around journeys more than newsletters.

A local web interface for Beancount plain-text books: balance sheet, income statement, queries and charts.

Lightweight translation management with a REST API and imports and exports for common string formats.

Rank tracker with Search Console integration. Needs a SERP scraping service or your own proxies to fetch positions.

MIT-licensed no-code builder for database apps with views, forms, user roles and public pages, on your own server.

AGPL-3.0 invoicing for individuals and small businesses: invoices, estimates, payments and expenses with PDF export. The default 3.x branch is an alpha; production installs should use 2.x.

Course platform aimed at teams and bootcamps, with lessons, assignments and student progress.

Mozilla's own translation platform for volunteer communities, built around version-control sync.

Developer-oriented translation tool with a CLI that syncs files and a review flow for translators.

Self-hosted application tracker with AI resume review and job matching through Ollama or your own key.

Sell courses and downloads from your own site: course builder, Stripe payments, sales pages and student management.

Feedback boards with voting and a roadmap; AGPL core with a few enterprise-licensed folders.

A self-hosted technical crawler in the style of Screaming Frog.

AGPL-3.0 open-source scheduling app with commits this week.

Feedback, roadmap and announcements under Apache 2.0, with a Docker Compose file for self-hosting.

Boards, roadmap, changelog and a support inbox in one AGPL app; every feature is on when you host it yourself.

Hosted scheduler whose free plan covers 3 channels with 10 scheduled posts per channel and one user.

Free static hosting with HTTPS and custom domains: 100 projects, 500 builds a month and 20,000 files per site. You bring the HTML; there is no builder.

Google's free report of the queries, pages, clicks and positions for sites you verify. The raw material for the prompt above.

Email finder and verifier with 50 free credits a month and sequences from one connected mailbox.

Free interactive programming curriculum with projects and certifications; code and curriculum are open source.

Runs open-weight models on your own machine and serves them on an OpenAI-compatible API; pair it with any app above.

Visual builder for RAG chatbots and agent workflows that you can embed on a site. Modified Apache license: free to self-host, no multi-tenant resale.

Self-hosted chat for OpenAI-compatible APIs and Ollama, with document chat, web search, voice and user accounts. BSD-based license with a branding clause.

GPL-3.0 node-graph editor that runs Stable Diffusion, FLUX and other models locally; you build the workflow yourself.

Self-hosted PDF toolbox with dozens of tools, from merge and OCR to redaction and conversion; MIT core with some proprietary modules.

Retrieval engine with deep document parsing and chat assistants you can embed in a web page.

Fast native code editor with a built-in agent panel; the editor is GPL and Apache-2.0 licensed.

Open-source AI software-development agent you run yourself; MIT.

MPL-2.0 peer-to-peer file sync with no server; devices must be online at the same time, and Obsidian's docs list it as unsupported on iOS.

Multi-provider chat and agent workspace you can self-host. Apache-based license with extra terms for derivative products.

A per-second monitoring agent that detects hundreds of services on its own and ships with ready alerts.

Turns a screenshot or mockup into HTML/Tailwind, React or Vue code with your own model key.

VS Code in the browser on a machine you own; MIT. The quickest self-hosted replacement for the editor and terminal.

AGPL-3.0 workspace with docs and databases; desktop and mobile apps, with a self-hosting guide for the sync server.

The standard do-it-yourself stack: Prometheus for metrics, Loki for logs, Grafana for dashboards and alerts. Flexible, with real upkeep.

Runs inside Claude Code, Codex and similar CLIs: scores job posts against your CV, tailors the resume and cover letter, keeps a tracker. You still press Submit.

A lightweight Bitwarden-compatible server in one container; use it with the official Bitwarden apps and extensions.

Spreadsheet interface over Postgres, MySQL or SQLite. Source-available under a sustainable-use license: free for personal and internal use.

Database, user auth, file storage and a realtime API in one file; pair it with the front end your agent writes.

Local voice studio that clones voices and generates speech with eight engines, and adds dictation; MIT-licensed.

Local, extensible agent that installs packages, runs code and edits files with any LLM.

Desktop client for dozens of model providers and local models, with saved assistants, knowledge bases and MCP.

A desktop app that enlarges small or blurry product shots with open upscaling models.

Forum software that can stand in for Kajabi's community spaces.

AGPL-3.0 block-based note-taking with block references and a database view; runs as a desktop app or in Docker.

A ChatGPT-style interface for many providers at once, with agents, MCP tools, a code interpreter and message search.

Desktop app that downloads open models and runs them offline; it can also call cloud APIs with your key.

Cuts and joins audio and video without re-encoding, which is fast but has no transcript.

Free resume builder with plain, parser-friendly templates; use the hosted site or run it in Docker.

Resume builder with many templates, PDF export and optional AI; free at rxresu.me or self-hosted.

Product analytics with funnels and retention, plus replay, flags and experiments; MIT core with an ee/ folder under a separate licence.

GPL-3.0 Windows tool that captures or records the screen with a keystroke and uploads the result to destinations you configure.

Reader with AI summaries and a hosted service; the code is AGPL-licensed.

Wraps an existing SQL database in an admin app plus REST and GraphQL APIs; source-available license.

Private metasearch engine; the free search backend most self-hosted answer engines plug into.

AGPL-3.0 hierarchical note-taking for large personal knowledge bases; desktop app or a Docker server.

Docker-based deployment panel for apps and databases. Apache-2.0 apart from a proprietary folder.

Self-hostable assistant that answers from the web and from your own notes, with scheduled research and any local or hosted model.

Self-hosted answer engine, formerly Perplexica: SearXNG for search, Ollama or cloud models for answers, with citations, uploads and history.

AGPL-3.0 self-hosted file sync with desktop and mobile clients; works with a vault as an ordinary folder.

Headless commerce engine in Node.js; the storefront is yours to build or take from a starter.

Self-hosted code-completion and chat server; the core is Apache-2.0 and an ee/ folder is licensed separately.

Metrics, logs and traces built on OpenTelemetry and ClickHouse; the nearest open match to Datadog's APM.

MIT-licensed, Heroku-style git-push deploys on a single machine; small and scriptable, managed from the command line.

Spaced-repetition flashcards for drilling formulas and definitions; free on desktop.

MIT desktop recorder for macOS and Windows with local transcription and summaries; advanced exports and speaker separation sit in a paid Pro edition.

Screenshot tool with numbered markers, arrows and blur for building guides by hand; nothing is captured automatically.

Google's auditing tool for performance, accessibility and SEO basics, run from Chrome or the command line; Apache-2.0.

An agent that splits a question into sub-queries, reads many sources and writes a cited report: the open counterpart to Research mode.

Self-hosted bookmark-everything app for links, notes and images, with full-text search and optional AI tagging; AGPL.

Local-first envelope budgeting with desktop apps and an optional self-hosted sync server. Bank sync is optional and goes through third-party bridges such as SimpleFIN.

Desktop app around a local KeePass file, with a browser extension; sync the file yourself.

Self-hosted web archiver that saves HTML, PDF, screenshots and media for each URL you feed it; less of a browsing UI.

Apache-2.0 image-generation studio with a canvas for inpainting and layers, installed from a launcher.

Laravel store with an admin panel, multi-warehouse inventory and themes, MIT licensed.

BSD-3 framework for building a page editor into your own product; it ships a blocks panel, a style manager and HTML export.

A small hub plus agents for server and Docker stats, history and alerts; the build above, already finished.

Personal CRM for friends, family and contacts: notes, reminders and relationships, no sales pipeline.

E-book reader for every platform with built-in read-aloud, sync and notes.

The workhorse: a CLI, Python library and HTTP server that removes backgrounds with a choice of open models, BiRefNet included.

Link attribution platform with branded domains, analytics and QR codes. The core is AGPL-3.0 and a small /ee folder needs a commercial licence; self-hosting has several moving parts.

Self-hosted double-entry finance manager with budgets, rules and importers; closer to bookkeeping than to envelopes.

Plugin-based platform for data-model-driven admin apps and workflows; free to self-host under its own license, some plugins are paid.

GraphQL commerce API in Python with a React dashboard; the storefront is separate.

Keyword research, rank tracking, backlinks and audits in one self-hosted app. The code is free; the data comes from your own DataForSEO key, billed per request.

General OSINT scanner with a web UI; harvesting a domain's addresses is one of its many modules.

AGPL-3.0 Loom alternative (MIT for some crates) with desktop apps, share links and local editing. Self-hosting runs the web app, a media server, MySQL and MinIO in Docker Compose, and the project offers no direct support for it.

Describe a UI, see it rendered live and convert the HTML to React, Svelte or web components; works with OpenAI, Anthropic via LiteLLM, or Ollama.

Logs, metrics and traces in a single Rust binary that can keep data in cheap object storage.

AGPL-3.0 wiki for teams with real-time editing, spaces, permissions, comments and page history.

Airtable-style tables on Postgres, with grid, kanban, forms and an API; free to self-host.

Self-hosted blogging with plugins for newsletters and paid memberships; more upkeep and plugin updates.

MIT-licensed kanban with swimlanes and rules, and an importer for Trello boards among many other tools; runs from Docker or Snap.

Converts whole e-books into chaptered audiobooks with a choice of voice engines, voice cloning and a very long list of languages.

Collaborative bookmark manager that preserves pages, supports annotation and runs on your own server; AGPL.

Translates a video's speech, re-voices it and adds subtitles; no lip sync.

MPL-2.0 automatic tracker that records which apps and sites are open, with all data kept on your device. It logs activity rather than timing projects by hand.

Animates a still portrait from a driving video of a face; useful for photo avatars, not driven by audio on its own.

GPL-3.0 browser-extension screen recorder that its author calls free, privacy-friendly and without limits.

Free multi-track audio editor for cleaning up and mixing the recordings.

Collects addresses, names and subdomains for a domain from public sources; several sources need their own API keys.

GPL-3.0 desktop client with a unified inbox, snooze, send later, templates and rules in the free version; link tracking and read receipts are in the paid Pro tier.

Turns a YAML file into a typeset PDF resume, so your master resume can live in git.

Runs on GitHub Actions and publishes the status page to GitHub Pages; outages open GitHub issues. No server needed.

Platform that creates development environments on your own servers from Terraform templates; AGPL, more setup than code-server.

Self-hosted reader with a full web interface, extensions and an API that many phone apps can sync with.

PDF toolkit that runs entirely in the browser, so files never leave your machine; use the hosted site or self-host it.

Offline toolkit (formerly HeyGem) that clones your look and voice from a recording, then drives the clone with text or audio; needs an NVIDIA GPU. Community license.

Ruby on Rails commerce platform with an admin and a storefront.

Visual database with grid, kanban, gallery and Gantt views and an API.

Handwriting and annotation app that opens PDFs, so you can write on, highlight and sign them and export the result.

Federated video platform with transcoding, HLS, private and unlisted videos, embeds and live streams; a full server to run.

Apache-2.0 Docker-based hosting with a web dashboard, one-click apps and automatic HTTPS.

Hosted vault with a free plan covering unlimited items and devices; Premium adds extras such as built-in TOTP.

MIT drag-and-drop editor you embed in your own React or Next.js app, with your components as the building blocks.

MIT-licensed tool that turns a Markdown outline into an interactive mind map.

Session replay for watching real visitors use a live site; heavier to run than a survey tool.

MIT plugin that syncs through your own CouchDB or S3-compatible storage, with end-to-end encryption and automatic merging of simple conflicts.

Real-time boards with Markdown cards, attachments, webhooks and a REST API. Source-available under a community license; a paid Pro edition adds calendar, timeline and phone apps.

The same app on your own server with your own AI key. AGPL plus extra terms: free for personal use and for organisations under five business users.

Long-running PHP shortener for a private domain, with an API, stats and a plugin system.

MIT plugin that commits, pulls and pushes a vault on a schedule; its README calls the mobile support highly unstable.

Spreadsheet-database hybrid with Python formulas; each document is a SQLite file, and there is a desktop app.

Simple Go bookmark manager with a web UI, a CLI and saved readable copies; MIT.

Single-binary live streaming server with chat; covers live events, not an on-demand library.

Minimal, fast bookmark manager built to start with one Docker command; MIT.

Modern shortener with custom domains, link statistics and an API; MIT-licensed, with a freemium hosted version.

Uptime, response-time and server-hardware monitoring with incident history.

GPL-3.0 plugin that adds generation, inpainting and outpainting inside the Krita painting app, working with a ComfyUI server.

Store plugin for WordPress; the core is free and many extensions are sold separately.

Chat-flow builder with OpenAI blocks and a website bubble. Source-available under FSL, which turns into Apache 2.0 after two years.

TypeScript and React storefront with an admin, extensions and themes.

Community-run continuation of the Maybe finance app: accounts, transactions, budgets and net worth, self-hosted with Docker.

Free reader for Mac, iPhone and iPad that stores feeds locally or syncs through iCloud and other services.

Native keyboard launcher with clipboard history, a text expander, file search and extensions compatible with Raycast's React API; GPL-3.0.

Self-hosted Laravel accounting with invoices, bills and reports. Source-available: free to run for up to 2 users, 1 company and 1,000 invoices.

Logs, metrics, traces and session replays on ClickHouse, searched from one screen.

Minimal single-binary reader with a fast web interface and an API for third-party apps; a hosted version is offered.

MIT Mac app that records and transcribes on the device, keeps meetings in a local SQLite database and lets you choose the model behind the notes.

PHP storefront and back office with themes and modules.

Status pages and uptime checks defined in YAML or Terraform; AGPL, hosted or self-hosted with Docker Compose.

Next.js AI search with a generative UI; its Docker Compose setup bundles SearXNG, so no search key is needed.

AGPL-3.0 time tracker with projects, clients, billable rates and reports; self-host it or use solidtime's hosted cloud.

Local-first, end-to-end encrypted app with blocks, databases and kanban; source-available under the Any Source Available License.

TypeScript headless commerce framework; the Community Edition is GPL-3.0.

Browser sidebar for locally running models such as Ollama. A general assistant you can point at selected text, not a dedicated paraphraser.

A pip-installed command line tool that removes backgrounds from images and from video.

Audio-driven talking video of any length from an image or a video; needs a large GPU.

AGPL-3.0 end-to-end encrypted office suite whose apps include a whiteboard and a kanban board.

eBPF-based monitoring that maps services and traces requests without code changes.

The closest full match: monitors, status pages, on-call and incidents, Apache-licensed outside an enterprise folder. Heavy to run.

Hosted reader with a free tier whose MIT-licensed code you can also run yourself; filters learn from what you like.

The classic open-source LMS with quizzes, grading and plugins for almost everything; built for schools more than for creators selling courses.

Command-line manager that keeps GPG-encrypted entries in a git repo.

Shortener with analytics that runs entirely on Cloudflare Workers and storage; exports links as JSON and access data as CSV.

MIT-licensed editor that renders flowcharts and sequence diagrams from text.

Free, story-based interactive lessons, mostly early math, run by a nonprofit on an open-source platform.

Upstream VS Code on a remote machine, reachable from a browser; MIT.

Team-oriented password sharing; the Community Edition is free to self-host.

Self-hosted table database with MIT-licensed core; some premium views are paid.

Turns EPUB, PDF and text files into audiobooks with Kokoro voices and matching subtitles; Windows gets a script installer.

MIT-licensed command-line task manager with filters, tags, priorities and recurring tasks.

The veteran Rails tracker: per-project issue types and workflows, roadmaps, time logging and a large plugin catalogue.

Small desktop app to merge, split, rotate, crop and reorder pages by dragging thumbnails.

Fast offline speech engine with many ready voices that runs on small machines; GPL-licensed and has no cloning.

AGPL-3.0 PHP CRM that is mature and widely used; version 7 runs on Apache or IIS with MySQL, MariaDB or MSSQL.

AGPL-3.0 Trello alternative with board visibility controls, workspace members and a Trello importer; Docker Compose sets up Postgres for you.

GPL-3.0 Linux task manager with sections, reminders and a calendar. It can sync with an existing Todoist account, which makes moving gradual.

GPL-3.0 Android to-do app (the revived Astrid) that syncs through CalDAV, Google Tasks or Microsoft To Do. A desktop build is in alpha.

Native Linux app for UI and UX design built with GTK; development is slower than the others.

PHP shortener with a REST API and CLI that serves links from one or more of your own domains; a separate web client adds a dashboard.

Group availability polls: propose times, everyone votes, you pick the slot. Fits collective meetings, not round-robin.

Minimal Markdown blogging from one binary, federated over ActivityPub; no newsletter sending.

A status page first, with built-in monitors and incident updates.

Spreadsheet-like editing on top of a real Postgres database you keep control of.

Django video and media CMS with HLS transcoding, playlists, private and unlisted media and embed codes.

MIT-licensed web UI over a ComfyUI backend with a simpler prompt page and a model manager.

Audio-driven half-body animation with hand gestures from one reference image.

BSD-3 Python linter for English prose that flags clichés, hedging and weak wording.

The MIT-licensed segmentation model behind many of the best free cutouts, including fine hair and edges; you run it from Python.

Free WebRTC rooms that bring remote guests into OBS; guests can record locally with a link option. AGPL, with a hosted instance anyone can use.

One executable with a built-in web interface and local storage, the lowest-effort way to self-host.

Tiny MIT-licensed menu-bar calendar for Mac; shows your events and has no sentence entry.

GPL vector editor for logos, posters and illustrations; no templates or cloud, everything is a local file.

Fast link checker for websites and Markdown; covers only the broken-link part of an audit.

A long-running PHP ticket system: plain to look at, dependable, and easy to host on shared PHP hosting.

AGPL-3.0 self-hosted profile page app with a web editor and a Docker image.

Chat, help center and marketing messages under AGPL-3.0 plus the Commons Clause, so it is free to self-host but not open source.

Conversational digital human that combines an LLM, speech recognition, TTS and talking-head models in a web UI.

MIT-licensed drag-and-drop website builder and CMS on Laravel, with blogs and online stores.

MIT-licensed self-hosted system for tasks, projects, areas, notes and tags, with recurring tasks and a Telegram integration.

AGPL-3.0 ticket management tool with automation, for teams already on the Frappe framework.

Self-hosted link archive in PHP with tags, lists and automatic link checks; GPL.

One web interface with extensions for many open speech, voice-conversion and music models.

Electron launcher with AI chat, clipboard history, snippets and notes. It runs Raycast extensions and can import an encrypted .rayconfig backup.

macOS launcher and command palette with a clipboard manager, window manager and script runner; installs with Homebrew; MIT.

MIT static HTML and CSS page you edit by hand, with deploy buttons for Netlify, Vercel, Cloudflare and others.

Community-maintained Android wrapper for Syncthing; Obsidian's docs say the official Android app is no longer maintained.

Prototyping and usability-testing tool for building clickable prototypes and watching how people use them.

AGPL-3.0 real-time whiteboard for freehand drawing and simple diagrams; boards persist on the server.

Course platform with a block editor, collections, analytics and certificates. Selling courses is an Enterprise feature.

Apache-2.0 live-chat server with a widget, bots and canned replies, in PHP.

Local Whisper transcription with speaker detection and a review editor, made for research interviews.

Deploys to your own Cloudflare account and costs close to nothing for small sites; Cloudflare keeps 90 days hot, older data goes to R2.

Browser extension that reads the current page aloud with your system voices or a cloud voice you connect.

Drag components onto a phone screen, snap logic blocks together and build Android or iOS apps. Free hosted service from MIT; the source is open.

Community fork of Openblocks for drag-and-drop internal apps, modules and embedding; AGPL.

Extension for Chrome, Firefox and Edge that records clicks into a guide with highlighted screenshots, blur and several export formats; no account and nothing leaves the device.

MIT-licensed PDF viewer, editor and toolkit with page tools, annotations and command-line utilities.

MIT Apple Silicon app that combines meeting capture and dictation, with local transcription, speaker labels, templates and a SQLite history.

AGPL-3.0, local-first mail, calendar and contacts client with Gmail, Microsoft 365, IMAP and JMAP support, built for low memory use; releases are still preview builds.

An Apache-licensed Python package with its own open model that runs locally, plus an optional paid cloud model.

Calendar app for a self-hosted Nextcloud server, built on CalDAV so any CalDAV client can read it.

Recursive link checker that reports broken links and redirects as text, CSV, HTML or a sitemap.

A command-line audit that scores whether AI crawlers can reach, read and cite your site, with a list of fixes.

Open-source system for guided interviews that assemble documents from your own templates.

One binary (CLI, wizard or desktop GUI) that crawls a site and writes an HTML audit: SEO, redirects, 404s, security headers, performance.

AGPL-3.0 dictation for Linux on X11 and Wayland, using whisper.cpp by default and staying on-device after the model download.

Rule-based IMAP filtering scripted in Lua. No AI, but it sorts, labels and archives by sender, subject or age on any provider.

Veteran PHP newsletter manager with lists, bounce processing and scheduled campaigns.

Scrum and kanban boards with epics, sprints and user stories, plus importers from other trackers.

Nextcloud app for signing PDFs, including with certificates; needs a Nextcloud server.

Desktop qualitative analysis for text, images, audio and video, with codes, memos and reports.

Zero-based budgeting that keeps data in the browser, with OFX, QFX and CSV import. Still labelled alpha by its authors.

Free image-generation app for Apple devices that runs models on the device; the community repo is GPL-3.0.

MPL-2.0 tool from the Thunderbird team: share times from your calendar and let people grab them.

Free coding exercises in dozens of languages with automated feedback and optional human mentoring.

Self-hosted read-along reader for EPUB, PDF and DOCX with word-by-word highlighting and MP3 or M4B export; plug in Kokoro or a cloud voice.

Self-hosted AI visibility platform for ChatGPT, AI Overviews, Perplexity, Claude and more, through scraping providers or model APIs.

Unlimited cutouts that run in your own browser tab, so photos never leave the device.

A self-hosted image toolbox: compression, format conversion and AI background removal in one web page.

Early-stage Descript-style editor run from source: delete a word in the transcript and the clip is cut.

MPL-2.0 language server that checks LaTeX and Markdown with LanguageTool, with a VS Code extension.

MIT menu-bar app that spots calls, separates speakers and writes Markdown notes through the Claude CLI or any OpenAI-compatible model.

Mozilla's mail client with a built-in calendar and task list for CalDAV, Google and local calendars.

One Go binary with SQLite and a built-in dashboard that tracks AI mentions with your own keys; still pre-release.

Survey platform built for field research and humanitarian work, with offline data collection on Android. A free plan runs on its hosted servers; the code is open.

MIT template for GitHub Pages: edit one YAML file and push, with your own domain optional.

A small Django app for templated emails with scheduled follow-ups; no warmup or mailbox rotation. AGPL with extra clauses.

Obsidian plugin for qualitative coding: codes and extracted quotes are plain Markdown files linked together.

Screens written in YAML and rendered by an open-source Flutter runtime. The browser editor, Ensemble Studio, is a hosted service.

GPL-3.0 self-hostable link-in-bio page with a Netlify deploy button.

Highlight and tag quotes in documents and export them by tag; runs on your computer or a server, with a hosted instance to try.

Early-beta Windows recorder that captures desktop clicks into an editable guide and exports Markdown or HTML.

MIT form backend that deploys to your free Cloudflare account; it collects the signups, you add the ranking.

MIT Next.js template with Notion as the list and Upstash Redis for rate limiting; no referral mechanics.

Records several people in separate synchronized tracks; the code is on GitHub and there is a paid hosted service.

Collaborative qualitative analysis in the browser, developed at the University of Bremen; free to register.

MIT API-only waitlist with email validation and rate limiting, for people who bring their own front end.

MIT-licensed Rails engine with a star-prompt widget, text and in-browser video, a public collection page and a triage dashboard. It's a gem for an existing Rails app, and the display side is yours to write.

Source-available (Business Source License) widget with referrals, a leaderboard and analytics. The README marks it as a work in progress.

Adobe's free reader still views, comments on, fills and signs PDFs; editing and conversion are paid.

Canva-owned desktop app for vector, photo and page layout; free for individuals, with AI tools reserved for Canva paid plans.

Ahrefs' own free tier: audits, analytics and a capped backlink list, for verified sites only.

Free for sites you verify: a site audit (5,000 crawl credits per project each month) and capped views of your backlinks and organic keywords. No competitor analysis.

Free plan with 2 sequences, 250 emails a day from one Gmail mailbox and 75 data credits a month.

Free and built into every Mac, iPhone and iPad, with iCloud, Google and Exchange accounts supported.

Proofread, rewrite in a chosen tone and summarize inside most apps on iPhone and Mac; needs a device that supports Apple Intelligence.

Hosted free plan: automations for up to 2,000 contacts and 300 emails a day, with a Brevo badge on every email.

Buffer's own free plan: 3 channels, 10 scheduled posts per channel, 100 ideas and one user.

The hosted plan for a single person: unlimited event types and calendars, no team features.

Canva's own free plan: 5 GB of storage, 4.7M+ stock items, 1.6M+ templates and PDF, JPG and PNG export.

Hosted time tracker whose free plan covers up to 5 users, unlimited tracking and projects. Reports reach back one month and export is PDF only; billable rates are paid.

Free, cookie-less page views, referrers and countries, through a JavaScript beacon or Cloudflare's proxy; basic reports only.

Free standard business contracts (mutual NDA, services, contractor, DPA and more) under CC BY 4.0.

The Treasury's free system for federal payroll tax deposits; you enroll once and schedule each deposit yourself.

Hosted sender whose free plan allows 2,500 subscribers and 10,000 emails a month, with its branding on emails; paid Pro starts at $9 a month billed yearly.

Desktop guide builder that keeps everything on your machine; the free version covers 5 guides with PDF export, and a one-time licence lifts the limits.

Free US wills, financial powers of attorney and healthcare directives, paid for by nonprofit partners.

Free graphing, geometry and calculus tools with a large library of interactive activities.

Free on any public repository, with upvotes and categories; works when your users already have GitHub accounts.

Google's own app already has keyboard shortcuts (switch them on in settings), snooze, schedule send, undo send and a multiple-inbox layout, which cover a lot of what Superhuman sits on top of.

Gmail's own filters plus a view that lists bulk senders with an unsubscribe button each; the view is still rolling out.

Free with a Google account: unlimited forms and responses, section branching, results straight into Sheets.

Queries, clicks, linking sites and indexing status for sites you own, straight from Google.

Hosted free tier: 10k metric series, 50 GB of logs and 50 GB of traces a month, 14-day retention, 3 users.

Hunter's own free plan: 50 credits a month for finding and verifying, enough for occasional lookups.

Obsidian's docs recommend it on Apple devices if the vault sits in the Obsidian folder; they advise against it on Windows.

The IRS's free portal for e-filing 1099-NEC and other information returns, up to 100 at a time by hand or CSV, once you have a Transmitter Control Code.

Nonprofit courses from arithmetic to calculus plus computing and science, with practice exercises and mastery tracking, at no cost.

Hosted testing tool whose free plan has unlimited quick studies, 3 seats and 15 self-recruited responses.

Built into the Edge browser on desktop and phone: reads pages aloud in natural-sounding voices with no subscription.

Ad-supported online payroll, free for businesses paying 9 or fewer people a month; tax deposits and filings are yours unless you buy its paid tax service.

Free math and science simulations from the University of Colorado Boulder for exploring a concept by dragging and tweaking.

The same app without Pro: launcher, extensions, snippets and quicklinks stay, but notes cap at 5, clipboard history at 3 months, and there is no AI or sync.

Desktop crawler for technical audits; the free version crawls up to 500 URLs and the licence is $279 a year.

Shopify's own free chat app for the storefront, with an assistant that knows your catalog, policies and orders.

Free WordPress plugin with a submission form, star ratings and a testimonial slider; paid upgrades exist. Needs a WordPress site.

Free to publish and send; takes 10% of paid subscription revenue and owns the reader app.

Hosted form builder whose free plan has no form or submission cap under a fair-use policy, with logic, file uploads and payments. Pro is EUR 20 a month and adds custom domains and branding removal.

Hosted rival with a free plan for browser capture, capped at 5 shared workflows and without PDF, HTML or Markdown export.

Free desktop mail client from the Thunderbird project: any IMAP account, calendar and add-ons. Not keyboard-first, but it stores mail locally.

Hosted prototype testing; the free plan allows 1 project, 5 blocks and 10 responses a month.

Free hosted plan for US and Canadian businesses with unlimited invoices, estimates, bills and manual bookkeeping; automatic bank import and receipt capture cost extra.

Free hosting with unlisted links and embeds; ads and suggested videos appear around your player.