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Top 23 knowledge-management Open-Source Projects
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logseq
A local-first, non-linear, outliner notebook for organizing and sharing your personal knowledge base. Use it to organize your todo list, to write your journals, or to record your unique life.
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AppSignal
AppSignal knows why the f*#k it crashed. Stop vibe-debugging. Every exception, every backtrace, grouped so you see patterns, not noise.
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Project mention: 15 merged IME fixes: the recurring ways Japanese typing breaks web apps | dev.to | 2026-10-06
TriliumNext/Trilium #10315: board card and column titles.
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docs
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. (by suitenumerique)
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quarkdown
🪐 Markdown with superpowers: from ideas to papers, presentations, websites, books, and knowledge bases.
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Seafile
Beyond file syncing and sharing, a new way to organize your files with extensible file properties and flexible views
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athens
Athens is a knowledge graph for research and notetaking. Athens is open-source, private, extensible, and community-driven.
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It's not exactly like logseq but I really like SilverBullet (https://silverbullet.md/). It's self-hostable and really hackable (plugins, dynamic categorization via embedding custom queries, etc.). Browsers are the first class platform. I really dislike how logseq/Obsidian etc. try to push you towards local fat clients or web clients that only use browser local storage. I _want_ everything stored on a central server so I can just pick up on any device without having to sync.
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obsidian-second-brain
Persistent memory for Claude Code and 6 other CLI agents, stored as plain markdown in your Obsidian vault. Stop re-explaining your projects, decisions and people every session. 45 commands: hybrid semantic search, self-rewriting notes, key-less web research, and scheduled agents that maintain the vault while you sleep.
Project mention: A Vault That Rewrites Itself: obsidian-second-brain and the Karpathy LLM Wiki Pattern | dev.to | 2026-10-08Two tools most of us own ignore each other completely. An Obsidian vault with hundreds of notes nobody rereads. An AI agent in the terminal whose every session starts from zero, as if the past never happened. The obsidian-second-brain repository glues them together: 4.7k stars, MIT, authored by Eugeniu Ghelbur. The README's own formula: an evolution of Karpathy's LLM Wiki pattern, a vault that rewrites itself. Here's a review, plus why I read the whole thing with deja vu: my business CRM runs on the same pattern.
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Project mention: I tried to move my notes out of Emacs. I failed. Again | news.ycombinator.com | 2026-10-10
Another problem I occasionally have is that if I write something down, my brain kind of let go of the most of the memory of it, so the more I write and organize, I feel more stupid.
[1] https://github.com/inkeep/open-knowledge
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freeplane
Application for Mind Mapping, Knowledge Management, Project Management. Develop, organize and communicate your ideas and knowledge in the most effective way.
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Project mention: GitJournal/GitJournal: Mobile First Note Taking Integrated with Git | news.ycombinator.com | 2026-05-06
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basic-memory
AI conversations that actually remember. Never re-explain your project to your AI again. Join our Discord: https://discord.gg/tyvKNccgqN
Project mention: Best MCP Memory Servers for Teams in 2026: Context Cloud vs mem0 vs Basic Memory vs claude-mem vs MemPalace | dev.to | 2026-05-28Basic Memory is the simplest option and that's its strength. It stores knowledge as markdown files that you can read, edit, and version control yourself. No database, no cloud, no dependencies beyond the CLI.
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Alexandrie
📚 The open-source, offline-first Notion, Obsidian & Confluence alternative. Advanced Markdown, multi-tenant teams, OIDC/SSO, and local S3 backups. Deploy in one command. (by Smaug6739)
Project mention: Reactive Tree Management in Nuxt 4: How I Modeled Complex Hierarchies with Pinia | dev.to | 2025-11-01GitHub: https://github.com/Smaug6739/Alexandrie
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GitHub: dvorka/mindforger
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revezone
A lightweight local-first graphic-centric productivity tool to build your second brain. Supporting Excalidraw/Tldraw whiteboard and notion-like note. 一款以图形为中心、轻量级、本地优先的用于构建第二大脑的效率工具。支持 Excalidraw、Tldraw 白板和类 Notion 笔记。
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Documize
Modern Confluence alternative designed for internal & external docs, built with Go + EmberJS (by documize)
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TidGi-Desktop
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-clipping and Anki connect. 「 太记 」是一个基于「 太微 TiddlyWiki 」的知识管理桌面应用，能保护隐私内容、高级自动化、自动Git云备份、部署为博客，且可通过RESTAPI与Anki等应用连接。（迭代开发中欢迎试用，开发进度见下方链接）(Under active development, see website below for details)
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Project mention: Five Components of Agent Memory, Implemented in Plain Markdown | dev.to | 2026-05-04
The architectural shape — a human-editable instruction layer, a structured memory layer, a graph view both humans and agents share — is showing up in several places right now. IWE is one open-source implementation of it. The binary is on GitHub, on Homebrew, on crates.io. Point an agent at it and try.
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gtoolkit
Glamorous Toolkit is the Moldable Development Environment. It empowers you to make systems explainable through contextual micro tools.
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When making a custom OWL file, if you are new to using OWL, we advise you to use WebProtégé, since its UI is simpler and less overwhelming. Advanced users should use https://protege.stanford.edu/. It lets you use more of the systems functions, which are not present in the web version.
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awesome-knowledge-management
A curated list of amazingly awesome articles, people, applications, software libraries and projects related to the knowledge management space
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
knowledge-management discussion
knowledge-management related posts
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Take Your AI's Questions Out of the Terminal
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I kept losing the context behind my code, so I built Kote
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Logseq 2.0 Beta (DB version) is here
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Obsidian AI Setup – Bootstrap a Personalized Obsidian Vault with AI
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Stop Your AI Agent Forgetting Everything Between Sessions
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Show HN: BrainAPI's event-centric graph from any data with four-stage pipeline
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Show HN: Skill for your agent to visualize your gbrain and Obsidian
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A note from our sponsor - SaaSHub
www.saashub.com | 15 Oct 2026
Index
What are some of the best open-source knowledge-management projects? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | logseq | 45,246 |
| 2 | Trilium Notes | 38,279 |
| 3 | docs | 16,926 |
| 4 | quarkdown | 16,303 |
| 5 | Seafile | 15,321 |
| 6 | athens | 6,299 |
| 7 | silverbullet | 6,277 |
| 8 | obsidian-second-brain | 4,742 |
| 9 | open-knowledge | 4,430 |
| 10 | freeplane | 4,404 |
| 11 | GitJournal | 4,240 |
| 12 | basic-memory | 4,190 |
| 13 | Alexandrie | 2,804 |
| 14 | mindforger | 2,723 |
| 15 | revezone | 2,664 |
| 16 | Documize | 2,422 |
| 17 | TidGi-Desktop | 2,004 |
| 18 | iwe | 1,774 |
| 19 | gtoolkit | 1,581 |
| 20 | Protégé | 1,571 |
| 21 | quillpad | 1,400 |
| 22 | TW5-TiddlyMap | 911 |
| 23 | awesome-knowledge-management | 884 |
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