undefined-ui/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.
- Stars
- 1.1k
- Forks
- 183
- Open issues
- 2
- Last push
- 8d ago
About second-brain-os
second-brain-os is a free, open-source AI agent tool by undefined-ui, written mainly in HTML. 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. It has 1.1k GitHub stars and 183 forks, and was last updated 8d ago. It's released under the MIT license, a standard open-source license.
- License
- MIT
- Language
- HTML
- Stars
- 1,109
- Last update
- 8d ago
- Runs on Mac
- Not stated
- GPU
- Not stated
- Paid API key
- Not stated
- Self-hostable
- Not stated
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second-brain-os FAQ
Is second-brain-os free?
Yes. second-brain-os is open source and free to use. It's released under the MIT license, a standard open-source license.
Does second-brain-os run on a Mac?
The project doesn't say. Check its installation guide before you start.
Does second-brain-os need a GPU?
The project doesn't state hardware needs. AI models generally run much faster with a GPU.
Is second-brain-os still maintained?
Yes. It was last updated 8d ago and has 2 open issues on GitHub.
What are alternatives to second-brain-os?
Similar free, open-source tools include hermes-agent, ECC, ponytail, claude-code-best-practice.