RAG & Knowledge
second-brain-os
A self-maintaining AI second brain for Obsidian and Claude Code.
★ 888 starsMIT
View guide →A Flutter e-reader and audiobook app with AI chat.
omnigram is an open-source rag & knowledge project by lxpio (lxpio/omnigram on GitHub). It has 75 GitHub stars and 9 forks, is released under the Custom license, and was last updated on GitHub on 15 September 2026.
Decide what you want the project to do before installing anything.
Grab the source and skim the README for setup requirements.
Install dependencies and add any API keys or settings it needs.
Launch it and follow the example workflow from the docs.
Converts text into spoken audio.
One codebase running on mobile and desktop.
Comfortable writing and organizing experience.
Works offline with on-device storage.
Bring notes from Obsidian, Notion, and more.
Own your second brain completely.
Download the source and move into the project folder.
git clone https://github.com/lxpio/omnigram.git
cd omnigramFetch the Flutter/Dart dependencies.
flutter pub getLaunch the app on your device or emulator.
flutter runIt is an open-source project at lxpio/omnigram with 9 forks. Check the repo’s contributors and recent commits to judge how active maintenance is.
The project uses a custom license — read the LICENSE file in the repo before commercial use.
Locally or on your own server, depending on how you deploy it.
Most support OpenAI, Anthropic, Ollama, and other providers via config.
Yes — MCP support lets agents search your knowledge base directly.
A self-maintaining AI second brain for Obsidian and Claude Code.
Edit RDF knowledge graphs in your browser — no backend needed.
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Free and open — grab the source, star the repo, and start creating.