HilbertRaum

HilbertRaum is a local AI workspace for people working with confidential documents, research, or personal archives. It lets you use AI without sending your files or conversations to an external service.

• Document questions and summaries: Ask questions across PDFs, Word files, and text, summarize reports, or extract contract clauses and invoice amounts, with citations back to your files.
• Offline reference search: Use optional ZIM knowledge packs for Wikipedia, Wiktionary, and Wikivoyage alongside your documents, with cited articles readable inside the app.
• Images, scans, and audio: Ask a local vision model about pictures, recognize text in scanned documents, and transcribe audio with Whisper.
• Portable workspace: Keep the app, models, and password-encrypted workspace on an external drive and move them between computers.
• Model choice: Use GGUF models through llama.cpp, including Qwen3, Ministral, Gemma, and Granite; the app tests your hardware and recommends a model that fits.

The software is free and open source under GPL-3.0. It runs on Windows, macOS, and Linux with at least 8 GB of RAM, including CPU-only computers and systems with a GPU or unified memory. Initial downloads need internet access; after setup, it can work fully offline without an account or subscription. Prompts, documents, embeddings, and chat history stay in local storage. There's no cloud fallback, web search, or telemetry.