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Show HN: Platypus – Local meeting transcription, notes, and chat (Tauri, Rust)
Hi HN — I built Platypus as I wanted to combine note taking, live transcription and knowledge base management in one app. Granola / Notebook LM free local alternative. It's a Tauri/Rust desktop app that does on-device meeting transcription via whisper.cpp, notes in TipTap, and per-project HNSW vector search across your knowledge base. You bring your own LLM (Claude, OpenAI, Gemini, or local Ollama).<p>A few things that were interesting to figure out:<p>Zoom/Teams meeting auto-detection works via process inspection — Zoom spawns CptHost only during an active call (not when the app is just open), and Teams's audio.mojom.AudioService sub-process. No Zoom/Teams API access needed. Local Whisper works great - on Mac. Old PC experience not recommended, so I built in API transcription switch if the local model is slow.<p>Repo: <a href="https://github.com/pixelsmasher13/platypus" rel="nofollow">https://github.com/pixelsmasher13/platypus</a> Site: <a href="https://platypusnotes.com" rel="nofollow">https://platypusnotes.com</a><p>Feedback welcome!
Platypus is a technically sound, privacy-focused tool in a crowded 'AI meeting assistant' market, offering a compelling local-first alternative to Granola and NotebookLM. While the technical execution (Rust/Tauri) and clever meeting detection are impressive, the project currently lacks commercial traction and faces significant competition from well-funded incumbents and native platform features.