← Use cases · Coding agents & IDE assistants
AI agent tools for second brain
Short answer: Our top pick for second brain: openhuman, with the highest AgentPick Score (88/100) among tools tagged "second-brain". Runners-up: obsidian-mind (73) and sentient-os (63). Compare what each does, its license and how recently it was updated below.
| # | Tool | What it does | Score | Stars | License | Updated |
|---|---|---|---|---|---|---|
| #1 | openhuman | The fastest, cheapest, most efficient open-source agent harness. Run more than 500 agents on a $10 VPS. | 88/100 | ★ 42k | GPL-3.0 | 14 Oct 2026 |
| #2 | obsidian-mind | A self-organizing Obsidian vault that gives AI coding agents persistent memory. | 73/100 | ★ 5.3k | MIT | 14 Oct 2026 |
| #3 | sentient-os | An on-device LLM understands your entire life, then proactively offers to get your work done through computer use. | 63/100 | ★ 577 | AGPL-3.0 | 14 Oct 2026 |
| #4 | mcp-logseq | MCP server to interact with LogSeq via its Local HTTP API - enabling AI assistants like Claude to seamlessly read, write, and manage your LogSeq graph… | 56/100 | ★ 343 | MIT | 27 Sept 2026 |
| #5 | claude-code-memory-setup | Up to 71.5x fewer tokens per session on Claude Code with Obsidian + Graphify. Persistent memory, codebase knowledge graphs, and chat import pipeline. … | 48/100 | ★ 1k | MIT | 7 Oct 2026 |
| #6 | soul.md | The best way to build a personality for your agent. Let Claude Code / OpenClaw ingest your data & build your AI soul. | 33/100 | ★ 690 | MIT | 7 Sept 2026 |
| #7 | arscontexta | Claude Code plugin that generates individualized knowledge systems from conversation. You describe how you think and work, have a conversation and get… | 31/100 | ★ 3.5k | MIT | 24 Feb 2026 |
| #8 | pm-brain | PM Brain OS: The Second Brain for Product Managers, Made of Markdown | 27/100 | ★ 901 | MIT | 20 May 2026 |
| #9 | obsidian-claude-pkm | A complete starter kit for an Obsidian + Claude Code personal knowledge management system. | 25/100 | ★ 1.9k | MIT | 18 Feb 2026 |
Source: each project's public GitHub repository (description, stars, license, last push). Listed tools aren't tested or ranked by AgentPick.
How to choose
- Check which models and providers it supports.
- Prefer tools that show diffs and ask before running commands.
- Look for recent commits: coding agents change fast.
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