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.
Star History
Momentum
+19
STARS · LAST 30 DAYS
1
PER DAY
#8
MOST-STARRED HTML
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +7 | +19 | +90 |
| Per day | 1 | 1 | 1 |
| Forks gained | +1 | +3 | +10 |
second-brain-os gained 19 stars in the last 30 days, about 1 a day, and now has 756. It is about 1 year old and has averaged roughly 756 stars a year. It ranks #8 among HTML repositories and #3,003 across all languages on GitHubRepo.
Trending Record
3
DAYS ON TRENDING
#156
BEST RANK
Sep 26, 2026
FIRST APPEARANCE
Active
STATUS TODAY
second-brain-os has maintained a continuous presence across global trending indexes, peaking at #156. Below is the 30-day activity profile:
💡 Overview
second-brain-os is an open-source project written 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.
Engineered for speed, consistency, and developer ease, it solves common hurdles in agent-skills, ai-agents, claude. It provides clear interfaces, comprehensive configuration options, and seamless integration with existing tools across the modern development stack.
⚡ Key Features
Optimized execution pipeline written in HTML for predictable speed.
Zero-friction configuration with comprehensive sensible defaults out of the box.
Cross-platform runtime support across Linux, macOS, and Windows environments.
Strong typing and modular architecture designed for easy extension and maintainability.
Standardized CLI and API interfaces for smooth integration into CI/CD workflows.
Active community maintenance with regular dependency updates and security patches.
📥 Installation
$ git clone https://github.com/undefined-ui/second-brain-os.git
cd second-brain-os⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
HTML environment and standard tooling
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
second-brain-os coordinates its core functionality through a modular HTML pipeline. It parses configuration parameters, validates inputs, and resolves dependencies asynchronously. By minimizing runtime overhead and keeping allocations localized, it delivers predictable performance in both local development environments and automated production workloads.
🎯 Production Use Cases
Autonomous AI Agents
Orchestrate intelligent workflows and tool-calling routines with second-brain-os.
Model Inference & Prompting
Integrate fast, local or cloud-hosted generative AI models directly into production code.
Context Memory & RAG
Augment language models with dynamic vector retrieval and structured project memory.
Developer Productivity
Automate repetitive engineering tasks, code generation, and test creation using AI agents.
🚀 Getting Started
Install second-brain-os using your package manager: `git clone https://github.com/undefined-ui/second-brain-os.git`
Initialize your project workspace or configuration file for second-brain-os.
Import second-brain-os into your codebase or invoke it directly from your terminal.
Execute your test suite or run `second-brain-os --help` to verify successful setup.
👍 Strengths
⚠️ Considerations
⇄ Alternatives & Direct Competitors
👥 Who Should Use This
Developers and engineering teams building with HTML, seeking reliable, tested, and actively maintained tooling for production workloads.
🏆 Nearby in the Rankings
undefined-ui/second-brain-os is currently ranked #3,003 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #2,998 | alpkeskin/rota | Go | ★ 759 | Compare ↗ |
| #2,999 | Quramy/ts-graphql-plugin | TypeScript | ★ 758 | Compare ↗ |
| #3,000 | kubernetes/api | Go | ★ 757 | Compare ↗ |
| #3,000 | DarkflameUniverse/DarkflameServer | C++ | ★ 757 | Compare ↗ |
| #3,000 | opral/lix | Rust | ★ 757 | Compare ↗ |
| #3,003 | undefined-ui/second-brain-os This Project | HTML | ★ 756 | |
| #3,003 | ONLYOFFICE/onlyoffice-nextcloud | PHP | ★ 756 | Compare ↗ |
| #3,003 | Aguafrommars/TheIdServer | C# | ★ 756 | Compare ↗ |
| #3,006 | platypusguy/jacobin | Go | ★ 755 | Compare ↗ |
| #3,007 | vaadin/flow | Java | ★ 754 | Compare ↗ |
| #3,007 | usuiat/Zoomable | Kotlin | ★ 754 | Compare ↗ |
Frequently Asked Questions
What does second-brain-os do? +
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.
What language is second-brain-os written in? +
The primary language is HTML. Topics include: agent-skills, ai-agents, claude, claude-code, claude-skills.
Is second-brain-os actively maintained? +
Yes, the last recorded push was on Sep 27, 2026 with 1 open issues being tracked.
How many stars does second-brain-os have? +
second-brain-os has 756 stars and 118 forks on GitHub.
How does second-brain-os rank among GitHub repositories? +
With 756 stars, undefined-ui/second-brain-os is ranked #3,003 globally across all repositories tracked on GitHubRepo and #8 among HTML projects.
What license is second-brain-os distributed under? +
The repository reports a MIT license. Always verify the repository LICENSE file for legal terms.
