Open Source Note Taking & Knowledge Management Tools

AppFlowy ★ 78K

AI workspace for docs, projects, and wikis you control

Memos ★ 64K

Self-hosted timeline for quick notes, logs, and snippets

Joplin ★ 57K

Encrypted note-taking that syncs across all your devices

SiYuan ★ 47K

Privacy-first knowledge management with block-level linking

Logseq ★ 45K

Privacy-first knowledge base that connects your notes

Open-Notebook ★ 41K

AI-powered research notebook with full privacy control

Outline ★ 41K

Fast, collaborative wiki for teams who need organized docs

Khoj ★ 38K

AI second brain for research, automation, and personal agents

Docmost ★ 22K

Self-hosted wiki with AI, compliance, and real-time editing

Tolaria ★ 20K

Local-first, Git-native personal knowledge base with AI

SurfSense ★ 17K

Privacy-first knowledge base with any AI model you choose

Zotero ★ 16K

Collect, organize, cite, and share research in one place

Notesnook ★ 15K

Zero-knowledge encrypted notes that sync across all devices

vnote ★ 13K

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

Blinko ★ 11K

AI-Powered Note Taking App

Anarlog ★ 9.7K

Private meeting notes, no bots, files you own

AnyType ★ 9.0K

Private workspace for notes, tasks, and databases

MiaoYan ★ 8.7K

⛷ Lightweight Markdown app to help you write great sentences.

fsnotes ★ 7.6K

Fast Markdown note-taking app for Mac and iPhone

Lorien ★ 6.9K

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

Standard Notes ★ 6.7K

Secure, encrypted notes for your digital life

silverbullet ★ 6.4K

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

QOwnNotes ★ 5.9K

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

obsidian-mind ★ 5.5K

A self-organizing Obsidian vault that gives AI coding agents persistent memory. Claude Code, Codex CLI, Gemini CLI.

tagspaces ★ 5.4K

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

saber ★ 5.0K

The cross-platform open-source app built for handwriting

notes ★ 4.3K

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

GitJournal ★ 4.2K

Mobile first Note Taking integrated with Git

marksman ★ 3.4K

Write Markdown with code assist and intelligence in the comfort of your favourite editor.

dnote ★ 3.1K

A simple command line notebook

mindforger ★ 2.7K

Thinking notebook and Markdown editor.

MarkFlowy ★ 2.4K

A high-performance, cross-platform editor that supports WYSIWYG Markdown and general text editing.

Butterfly ★ 2.1K

🎨 Powerful, minimalistic, cross-platform, opensource note-taking app

TidGi-Desktop ★ 2.0K

TidGi is an privacy-in-mind, automated, auto-git-backup, freely-deployed knowledge management Desktop note app, based on Tiddlywiki, with REST API for web-clipp

Vrite ★ 2.0K

Collaborative content creation for technical teams

zotero-AI-Butler ★ 1.9K

【Zotero AI 管家】调用大模型，自动精读论文库里的论文，总结为Zotero笔记。支持主流大模型平台！您只需像往常一样把文献丢进 Zotero， 管家会自动帮您精读论文，将文章揉碎了总结为笔记，让您“十分钟完全了解”这篇论文！

iwe ★ 1.8K

Markdown knowledge graph — LSP for your editor, CLI + MCP memory for your AI agents

reflect-open ★ 1.6K

Open-source Reflect rewrite: A local-first AI agent-friendly Markdown note-taking app

gtoolkit ★ 1.6K

Glamorous Toolkit is the Moldable Development Environment. It empowers you to make systems explainable through contextual micro tools.

nocturne_memory ★ 1.4K

A lightweight, rollbackable, and visual Long-Term Memory Server for MCP Agents. Say goodbye to Vector RAG and amnesia. Empower your AI with persistent, graph-li

Beaver Notes ★ 1.4K

Local-first notes app with no cloud, no AI, no tracking

XWiki ★ 1.3K

Open-source knowledge management and collaboration platform

MoeMemosAndroid ★ 1.2K

An app to help you capture thoughts and ideas

dstask ★ 1.2K

Git powered terminal-based todo/note manager -- markdown note page per task. Single binary!

Zen ★ 1.2K

Clean, distraction-free note-taking with local storage

IdeaMemo ★ 1.2K

A Beautiful Memo App written with Jetpack Compose. 开源Android闪念笔记App。

pm-brain ★ 952

PM Brain OS: The Second Brain for Product Managers, Made of Markdown

MoeMemos ★ 915

An app to help you capture thoughts and ideas

projectmem ★ 874

Open-source coding agents memory. Records issues, attempts, fixes and decisions, then warns your agent before it repeats an approach that already failed. Native

second-brain-cloudflare ★ 841

One memory layer, every AI tool. Store anything once — recall it in Claude, ChatGPT, Cursor, or any MCP client. Self-hosted on Cloudflare's free tier.

NotelyVoice ★ 819

A 100% private AI voice transcription app that converts speech to text in 100+ languages. Built with Compose Multiplatform for Android & iOS using Whisper AI -

NotallyX ★ 787

Minimalistic Android note taking App | Notally, but eXtended.

thoughtdag ★ 730

Your thinking deserves a map: an infinite canvas where LLM conversations grow into an editable thought graph. Wires are the context.

OpenWiki ★ 644

OpenWiki — Mac desktop AI knowledge management tool. Capture clipboard, build personal wiki, get AI insights.

DeepNotes ★ 608

End-to-end encrypted visual note-taking tool with deep page navigation.

brain.md ★ 593

A persistent, file-based memory layer for coding agents — give Claude Code, Codex & others a project brain (durable decisions, requirements, constraints) via a

Paperling ★ 592

A minimal, distraction-free markdown editor built with Tauri, React, and TypeScript

Textus ★ 577

The next-generation Markdown editor, with an AI writing assistant. Free and open source for macOS, Windows and Linux.

kition ★ 575

Kition brings Markdown, DataTable, WhiteBoard, a tool-using AI agent, browser research, and visual workflows into one desktop workspace.

Darkwrite ★ 320

Distraction-free note-taking with powerful features

OpenNotas ★ 179

Fast, secure, and free personal note-taking app

Justnote ★ 67

Privacy-focused note-taking made simple and fast

itsnotes ★ 43

Self-hosted sticky notes with better organization