COG-second-brain
COG-second-brain is a self-evolving second brain with 33 AI skills and 10 agents.
- Region
- Overseas
- Pricing
- Free
- Open source
- Yes
- GitHub Stars
- ★ 1.1k
- Views
- 1
- Source
- GitHub
- Added
- 2026-08-27
- Last verified
- 2026-08-27
Overview
COG-second-brain is a self-evolving second brain that combines cognition, Obsidian, and Git. It achieves self-evolution through AI agents, Markdown files, and version control. The system includes 33 AI skills and 10 collaborating agents, supporting various AI tools such as Claude Code, Cursor, Kiro, and more. Users can interact with AI agents using natural language to perform tasks like knowledge organization, team briefings, and meeting note processing. COG-second-brain is suitable for both individuals and teams, helping improve productivity and knowledge management.
Key features
- ▪33 AI skills
- ▪10 agents working in collaboration
- ▪Supports multiple AI tools
- ▪Based on Markdown and Git
Use cases
Pros
- ＋Highly customizable
- ＋Supports multiple AI tools
- ＋No database required, no vendor lock-in
- ＋Open source and free
Limitations / notes
- －Requires some technical background
- －Requires internet connection
Who it's for
This overview was compiled by AI from public sources and may contain inaccuracies — please refer to the official site.
FAQ
Is it free?
Yes, COG-second-brain is open source and free.
Does it support Chinese?
It primarily supports English, but can handle multilingual Markdown files.
Can it be used commercially?
Yes, COG-second-brain is an open-source project and can be used for commercial purposes.
What tools are required?
Git and supported AI tools such as Claude Code, Cursor, etc., need to be installed.
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