HEEEXY
AI toolNew on GitHub

Second Brain OS

An AI second brain that maintains itself. Full guide, starter vault, agent skills and scripts for a self-organizing knowledge base in Claude Code and Obsidian.

FreeOpen source

What you get

Second Brain OS is a free, open-source AI tool published on GitHub by undefined-ui. An AI second brain that maintains itself. Full guide, starter vault, agent skills and scripts for a self-organizing knowledge base in Claude Code and Obsidian. GitHub stars: 1,109 License: MIT (free to use) Language: HTML Topics: agent-skills, ai-agents, claude, claude-code, claude-skills, knowledge-graph, knowledge-management, llm Last updated: 2026-10-14 How to get it: open the repository on GitHub, read the README and follow the setup steps. HEEEXY lists it in the Lab because it is popular, actively maintained and openly licensed.

More for new on github

  • Yetone Magpie: Every agent's model. One place. Codex on DeepSeek, Claude Code on Kimi, from the menu bar.
  • Printfilm: PRINTFILM: AI short-video marketing and AI short-drama creation platform
  • Answer Me With Html: Answer me with HTML — an agent skill that answers hard questions with a one-page HTML you can actually read. 让 AI Agent 用一页 HTML 回答复杂问题。