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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.

There can be more than Notion and Miro. AFFiNE(pronounced [ə‘fain]) is a next-gen knowledge base that brings planning, sorting and creating all together. Privacy first, open-source, customizable and ready to use.

Memos is an open-source, self-hosted note-taking app that brings your everyday thoughts together in a personal timeline. Your data stays yours, and you choose what to keep private or share.

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

An open-source, privacy-first, self-hosted knowledge workspace where humans and AI agents work together 开源、隐私优先、自托管的知识工作空间，让人与智能体在此协作

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

Self-evolving Context Database for AI Agents. Unify Agent Memory, Knowledge RAG and Skills.

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

Build your personal knowledge base with Trilium Notes

Turn any technical book PDF into a Claude Code skill — ready to study, reference, and use while you work.

Docmost is an open-source collaborative wiki and documentation software. It is an open-source alternative to Confluence and Notion.

A personal knowledge management and sharing system for VSCode

Docs is an open-source text editor: web-native, made for real-time collaboration, cleanly structured documents and sub-documents with full ownership of your data. Built to scale with Django and React.

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.

🪐 Markdown with superpowers: from ideas to papers, presentations, websites, books, and knowledge bases.

Beyond file syncing and sharing, a new way to organize your files with extensible file properties and flexible views

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

The open source embeddable online markdown editor (component).

✍ WeChat Markdown Editor | 一款高度简洁的微信 Markdown 编辑器：支持 Markdown 语法、自定义主题样式、内容管理、多图床、AI 助手等特性

A pleasant note-taking platform with native speed, majoring in Markdown, MindMap, Typst, and plain text.

Capture first. Organize later. A local-first Markdown app that turns scattered records into clear notes with AI.

A distributed, fast open-source graph database featuring horizontal scalability and high availability

🍼 Plugin driven WYSIWYG markdown editor framework.

DeFi Developer roadmap is a curated Developer handbook which includes a list of the best tools for DApps development, resources and references!

💻 Democratizing Snippet Management (macOS/Win/Linux)

Open source Markdown editor for macOS.

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

⛷ A light, native Markdown notebook for Mac, iPhone and iPad.

World's first open-source enterprise world model.

Private & local AI personal knowledge management app for high entropy people.

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.

Fast Markdown note-taking app for Mac and iPhone

The personal knowledge management (PKM) tool that grows as you do!

Collect your thoughts and notes without leaving the command line.

🔥 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.

📝 ‎ 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.

Infinite canvas drawing/whiteboarding app for Windows, Linux and macOS. Made with Godot.

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

The malleable knowledge base for you and your team. Powered by Markdown and Lua.

Text editor - Notes, ToDo & Filemanager (for Android) - Markdown, todo.txt, plaintext, math, ..

A web based file manager,web IDE / browser based code editor

Athens is no longer maintainted. Athens was an open-source, collaborative knowledge graph, backed by YC W21

Rudimentary Roam replica with Org-mode

Just like TextEdit on Mac but dedicated to Markdown.

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

花笺，轻量优雅的跨平台桌面便签工具，支持 Markdown 编辑与预览

A self-organizing Obsidian vault that gives AI coding agents persistent memory.

A dedicated scratchpad for power users

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