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Bring projects, wikis, and teams together with AI. AppFlowy is the AI collaborative workspace where you achieve more without losing control of your data. The leading open source Notion alternative.

Open-source, self-hosted note-taking tool built for quick capture. Markdown-native, lightweight, and fully yours.

Joplin - the privacy-focused note taking app with sync capabilities for Windows, macOS, Linux, Android and iOS.

A privacy-first, self-hosted, fully open source personal knowledge management software, written in typescript and golang.

A privacy-first, open-source platform for knowledge management and collaboration. Download link: http://github.com/logseq/logseq/releases. roadmap: https://logseq.io/p/NX4mc_ggEV

Build your personal knowledge base with Trilium Notes

An Open Source implementation of Notebook LM with more flexibility and features

A personal knowledge management and sharing system for VSCode

A fully open source & end-to-end encrypted note taking alternative to Evernote.

A pleasant note-taking platform in native C++.

A cross-platform Markdown AI note-taking software.

Self-organizing AI second brain for Obsidian + Claude Code. Drop any source and Claude reads, links, and files it into one connected knowledge graph of plain Markdown you own. AI note-taking, personal knowledge management (PKM), and an open-source Notion alternative. Based on Karpathy's LLM Wiki pattern.

Laverna is a JavaScript note taking application with Markdown editor and encryption support. Consider it like open source alternative to Evernote.

CLI and local web plain text note‑taking, bookmarking, and archiving with linking, tagging, filtering, search, Git versioning & syncing, Pandoc conversion, + more, in a single portable script.

Notes manager for macOS/iOS

📝 ‎ A web-based notes app for developers.

A free, open-source developer workspace. Snippets, notes, HTTP requests, calculations, and dev tools in one local-first app.

Think fearlessly with end-to-end encrypted notes and files. For issues, visit https://standardnotes.com/forum or https://standardnotes.com/help.

🔥 PlainApp is an open-source app that lets you securely manage your phone from a web browser. Access files, media, contacts, SMS, calls, and more through a simple, easy-to-use interface on your desktop.

QOwnNotes is a plain-text file notepad and todo-list manager with Markdown support and Nextcloud / ownCloud integration.

An open source personal productivity platform built on Markdown, turbo charged with the scripting power of Lua

TagSpaces is an offline, open source, document manager with tagging support

Browser extension to curate, annotate, and discuss the most valuable content and ideas on the web. As individuals, teams and communities.

Fast and beautiful note-taking app written in C++. Write down your thoughts.

Your web application for managing personal data.

Cross-CLI skill for Obsidian: turn your vault into a living AI-first second brain across Claude Code, Codex, Gemini, OpenCode, Hermes, and Pi. 44 commands - self-rewriting notes, local+hybrid semantic search, key-less web research, /obsidian-architect codebase docs, and scheduled agents that maintain the vault while you sleep.

A personal knowledge base that builds and maintains itself. Drop in sources — Claude (or Codex/Gemini) reads them, extracts knowledge, and maintains a persistent interlinked wiki. Works with Claude Code, Codex, OpenCode, Gemini CLI. No API key needed.

A self-hosted, database-less note taking web app that utilises a flat folder of markdown files for storage.

A simple command line notebook

Fractal Graph-of-Thought. Rhizomatic Mind-Mapping for Ai-Agents, Web-Links, Notes, and Code.