obsidian-second-brain alternatives

Tools that could take the place of obsidian-second-brain, ranked by the stacks builders put them in rather than by stars alone.

Other skills in the runchr registry that do the work of obsidian-second-brain — a tool somebody pairs with it ranks above a more popular stranger. Read the obsidian-second-brain page or browse every skills.

  • claude-skillsSkillsdoes the same work29.4k

    398 agent skills and plugins for Claude Code and 12 other coding agents.

  • AI-Research-SKILLsSkillsdoes the same work14.3k

    98 skills that turn coding agents into autonomous AI research agents.

  • graphifySkillsdoes the same work143.6k

    Builds a queryable knowledge graph from code, docs, SQL, and PDFs.

  • security-audit-skillSkillsdoes the same work64.4k

    Coding-agent skill for multi-phase security audits with verified findings.

  • scientific-agent-skillsSkillsdoes the same work56.3k

    177 validated science skills plus 100+ scientific databases for AI agents.

  • book-to-skillSkillsdoes the same work37.2k

    Converts books and documents into reusable agent skills for study and reference.

  • planning-with-filesSkillsdoes the same work27.9k

    File-based planning skill that keeps agent plans on disk across context loss.

  • distillySkillsdoes the same work26.4k

    Distills a person's judgment and voice into a reusable Agent Skill profile.

  • Markdown skills for autonomous ML research loops with cross-model review.

  • memUSkillsdoes the same work14.6k

    Shared personal memory wiki across sessions, agents, and devices.

  • Codex-native skill suite for human-in-the-loop academic research workflows.

  • internet-court-skillSkillsdoes the same work7.1k

    Open skill for agent-to-agent contracts, escrow, payments, and dispute