RAG & Wissen
second-brain-os
A self-maintaining AI second brain for Obsidian and Claude Code.
★ 888 SterneMIT
Anleitung ansehen →ontosphere ist ein Open-Source-Projekt aus der Kategorie RAG & Wissen von ThHanke (ThHanke/ontosphere auf GitHub). Es hat 247 Sterne auf GitHub und 30 Forks, wird unter der Lizenz NOASSERTION veröffentlicht und wurde zuletzt am 24. September 2026 auf GitHub aktualisiert.
Edit RDF knowledge graphs in your browser — no backend needed.
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.
Exposes its capabilities to AI agents over the Model Context Protocol.
Structures information as a queryable graph.
Bring notes from Obsidian, Notion, and more.
Own your second brain completely.
Combines keyword and semantic retrieval.
Connects notes into a queryable graph.
Download the source and move into the project folder.
git clone https://github.com/ThHanke/ontosphere.git
cd ontospherePull in the Node packages the project needs.
npm installStart the dev server and open the printed URL.
npm run devIt is an open-source project at ThHanke/ontosphere with 30 forks. Check the repo’s contributors and recent commits to judge how active maintenance is.
GitHub does not assert a license for this repo, so treat the code as all rights reserved until the author adds one.
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.
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A knowledge-base platform with visual AI workflows — build Q&A systems on your own documents
Die anderen Projekte der Kategorie RAG & Wissen mit den meisten Sternen im LibreAI-Katalog — die realistische Auswahl, falls ontosphere nicht das Richtige ist.
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Verwandte Projekte der Kategorie RAG & Wissen im Katalog, die ontosphere bei den Sternen am nächsten stehen — zum Weiterstöbern auf beiden Seiten.
Self-hosted rag & knowledge: 🧠 the brain for your ai — local-first memory engine for.
Semantic search engine designed for files and code.
Render and deploy a folder of markdown as a site in one move.
PDF reader with AI chat, flashcards, annotations, and text-to-speech.
AI-native data platform: 60+ connectors, ETL, scheduling, and RAG search.
Turn your GitHub stars into a searchable AI knowledge base.
Kostenlos und offen — hol dir den Quellcode, gib dem Repository einen Stern und leg los.