Topics / #second-brain

Second-brain projects on GitHub

Personal knowledge management systems for capturing and connecting ideas in a second brain.

As of , the most-starred Second-brain projects on GitHub are openhuman (42.2K stars), quivr (39.6K stars) and obsidian-releases (22.4K stars). GitHub.Locker tracks 17 Second-brain repositories with 185.2K stars combined. The fastest-growing on October 18 was obsidian-releases, with +39 stars in a day.

17Projects
185.2KStars in total
+171Stars in a day
Browse in the catalog →github.com/topics/second-brain ↗

Hot right now

Most stars gained in a day · Oct 18

+39

obsidian-releases

obsidianmd/obsidian-releases · ★ 22.4K

This is the official Obsidian releases repo: it hosts public releases of the app plus the community plugins and themes directories that power the in-app plugin and theme browser.

+31

claude-obsidian

AgriciDaniel/claude-obsidian · ★ 15.7K

claude-obsidian is a local-first knowledge system that pairs Claude Code (or any compatible Agent Skills host) with Obsidian. It turns any source you drop in into linked, source-cited Markdown pages and answers questions grounded in the evidence already in your vault.

+29

openhuman

tinyhumansai/openhuman · ★ 42.2K

OpenHuman is a local-first personal AI system that combines a persistent memory of your data, an orchestrator that runs agent fleets on durable graphs, and a deep researcher that sweeps your files and the web for you. It is written in Rust and ships as a desktop app.

+16

obsidian-mind

breferrari/obsidian-mind · ★ 5.4K

Obsidian Mind is a self-organizing Obsidian vault template that gives AI coding agents like Claude Code persistent memory: it stores notes, decisions, and context as markdown files so every session builds on the last instead of starting from zero.

The all-time top

17 projects · by stars

  1. #1 · tinyhumansai/openhuman

    openhuman

    OpenHuman is a local-first personal AI system that combines a persistent memory of your data, an orchestrator that runs agent fleets on durable graphs, and a deep researcher that sweeps your files and the web for you. It is written in Rust and ships as a desktop app.

    42.2K
  2. #2 · The-Vibe-Company/quivr

    quivr

    Quivr is an open-source engine that turns your files and content streams into search and monitoring — a 'second brain' you can query, built around an opinionated RAG powered by generative AI.

    39.6K
  3. #3 · obsidianmd/obsidian-releases

    obsidian-releases

    This is the official Obsidian releases repo: it hosts public releases of the app plus the community plugins and themes directories that power the in-app plugin and theme browser.

    22.4K
  1. 4

    tolaria

    20.1Krefactoringhq/tolaria · TypeScript

    Tolaria is a desktop app for macOS, Windows, and Linux that manages markdown knowledge bases — personal second brains, company docs, or AI assistant memory — stored as plain files in a git repo.

  2. 5

    foam

    17.5Kfoambubble/foam · TypeScript

    Foam is a personal knowledge management and note-taking system built on top of Visual Studio Code and GitHub, letting you link markdown notes together, visualize them as a graph, and optionally publish them to the web.

  3. 6

    claude-obsidian

    15.7KAgriciDaniel/claude-obsidian · Python

    claude-obsidian is a local-first knowledge system that pairs Claude Code (or any compatible Agent Skills host) with Obsidian. It turns any source you drop in into linked, source-cited Markdown pages and answers questions grounded in the evidence already in your vault.

  4. 7

    obsidian-mind

    5.4Kbreferrari/obsidian-mind · TypeScript

    Obsidian Mind is a self-organizing Obsidian vault template that gives AI coding agents like Claude Code persistent memory: it stores notes, decisions, and context as markdown files so every session builds on the last instead of starting from zero.

  5. 8

    obsidian-second-brain

    4.8Keugeniughelbur/obsidian-second-brain · Python

    It's a skill/plugin that gives Claude Code and other CLI coding agents (Codex, Gemini, Grok Bot, and more) persistent, self-rewriting memory stored as plain markdown notes in your Obsidian vault, so you stop re-explaining your projects, decisions, and people every session.

  6. 9

    open-knowledge

    4.6Kinkeep/open-knowledge · TypeScript

    OpenKnowledge is an AI-native markdown editor and LLM wiki app. It gives you a true WYSIWYG editor for markdown/mdx files plus built-in AI editing integrations with coding agents like Claude, Codex, OpenCode and Pi.

  7. 10

    My-Brain-Is-Full-Crew

    3.9Kgnekt/My-Brain-Is-Full-Crew · Shell

    A crew of 8+ AI agents and 14 specialized skills that manages your Obsidian vault through chat: capturing notes, triaging your inbox, searching, transcribing meetings, and handling email and calendar, in whatever language you write.

  8. 11

    arscontexta

    3.5Kagenticnotetaking/arscontexta · Shell

    Ars Contexta is a Claude Code plugin that generates a personalized knowledge system (a 'second brain') from a conversation about how you think and work, producing markdown files, folder structure, skills, and automation tailored to your domain.

  9. 12

    open-glean

    1.6Khydra-db/open-glean · TypeScript

    Open Glean is an open-source AI workspace built on Hydra DB: a 'second brain' you ask questions across your memories, files, and connected apps, with answers written from retrieved context and cited sources.

  10. 13

    chubbyskills

    1.3Kchubbyguan/chubbyskills · Python

    Chubby Skills is a set of 14 Agent Skills plus a CLI that ingest Chinese social content (Douyin, Bilibili, Xiaohongshu, WeChat public accounts, X, podcasts) and local documents into a personal Markdown knowledge base you can search, cite, and hand off to an AI agent.

  11. 14

    second-brain-os

    1.1Kundefined-ui/second-brain-os · HTML

    A knowledge base an AI agent builds and maintains for you, in plain markdown files you own: what you read, watch and save becomes linked wiki pages you can query. The repo holds the full guide, a starter vault, agent skills and scripts.

  12. 15

    compass

    992AgriciDaniel/compass · JavaScript

    Compass is a complete Obsidian vault template that runs your life as a Life OS: nightly journaling questions, quarterly retreats, planning, habits, tasks, reading, writing, and an AI assistant — all plain Markdown.

  13. 16

    operator-memory

    468aerovato/operator-memory · TypeScript

    Operator Memory is a self-improving context engine that gives coding agents a persistent brain: as the agent works it automatically writes specs, decisions, research and lessons as Markdown, so the next session starts already knowing what the last one learned.

  14. 17

    Life-Compass-Obsidian-CN

    150sunkeke-ai/Life-Compass-Obsidian-CN · JavaScript

    This is an unofficial Simplified Chinese localization of 'Compass', an Obsidian vault system ('Life OS') for managing journaling, goals, habits, tasks, projects, writing, reading and life reviews.

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