20 open-source GitHub projects to build an AI second brain for capture, memory and agents
blaizedsouza · x · 2026-09-27
@beamnxw curated 20 GitHub projects organized into a pipeline for a personal/business second brain: capture sources, connect ideas, remember context, and let agents act on it.
Highlights by stage:
- Capture: Chubby Skills (13 AI skills ingesting Chinese content from Douyin/Bilibili/Xiaohongshu/WeChat/X/podcasts into a knowledge base, subtitle-first transcription without GPU, plus a KB MCP server; 1.1k stars), OpenWiki, Agent Second Brain, DocMason, DocsAgent
- Connect: claude-obsidian, SwarmVault, sage-wiki, Vault Curate, COG Second Brain
- Memory: Hindsight, memU, TencentDB Agent Memory, agentmemory, OpenViking
An accompanying long article walks through how the author built this second brain around an AI assistant in their workspace.
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