12 open-source projects share topics or a category with open-knowledge. Each comparison below is drawn from recorded GitHub metadata — language, license, activity and review status. None of them is a judgement about which is better for you.
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.
Choose claude-obsidian if…
you would rather work in Python than TypeScript
MIT License suits your use better than GNU General Public License v3.0
you want the more widely starred option (16.1k)
you specifically need ai-note-taking or ai-second-brain
Shares agent-skills, knowledge-management, pkm, second-brain with open-knowledge.
The first open-source agent skills builder. Define skills by vibe workflow, run on Claude Code, Cursor, Codex & more. Build Clawdbot 🦞· APIs for Lovable · Bots for Slack & Lark/Feishu · Skills are infrastructure, not prompts.
Choose refly if…
you want the more widely starred option (7.5k)
you specifically need agent or automation
Shares agent-skills, claude, codex, skills with open-knowledge.
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.
Choose obsidian-second-brain if…
you would rather work in Python than TypeScript
MIT License suits your use better than GNU General Public License v3.0
you specifically need ai-agents or ai-note-taking
Shares agent-skills, claude, knowledge-management, pkm with open-knowledge.
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.
Choose llm-wiki-agent if…
you would rather work in Python than TypeScript
MIT License suits your use better than GNU General Public License v3.0
you specifically need ai-agent or ai-tools
Shares codex, knowledge-base, llm, markdown with open-knowledge.
Open-source 24/7 Cowork app for OpenClaw, Hermes, Claude Code, Codex, OpenCode and 20+ more CLI Agent | Customize your assistants | Team them up｜Star if you like it!
Choose AionUi if…
Apache License 2.0 suits your use better than GNU General Public License v3.0
you want the more widely starred option (34.0k)
you specifically need acp or agent-team
Shares codex, llm, skills with open-knowledge.
Pushed 12 days ago.Apache License 2.0TypeScript34.0k+200
Universal provider proxy for OpenAI Codex & Claude Code — use any LLM (Claude, Gemini, Grok, DeepSeek, Ollama…) with Codex CLI, App, SDK, and Claude Code
Choose opencodex if…
MIT License suits your use better than GNU General Public License v3.0
