10 open-source GitHub repos to build a local-first AI second brain
victor_explore · x · 2026-10-27
A curated list of 10 open-source GitHub repos for an "AI second brain" (star counts checked Oct 2026), covering chatting with files, video-to-notes, Markdown search, and bot-free meeting notes:
- AppFlowy (77k★): open-source Notion alternative with local AI
- AnythingLLM (68k★): private ChatGPT for your files, local-first agent
- Fabric (44k★): turns any text into clean notes
- Open Notebook (48k★): self-hosted NotebookLM
- Trilium Notes (38k★): huge note trees AI can read and edit
- QMD (38k★): local semantic search for notes, BM25 + vector + LLM reranking with Ollama support
- Karakeep (38k★): self-hosted bookmark-everything app with AI tagging
- claude-obsidian (15k★): Claude files your notes in Obsidian
- anarlog (9k★): meeting notes with no bot on the call
- Basic Memory (4k★): agents read and write your notes
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