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Oval – Native macOS client for Open WebUI with on-device voice mode
- shreyaspapi 7mo agoHey HN, I built Oval because I use Open WebUI as my self-hosted ChatGPT alternative but missed having a proper native Mac app for it. What it does: - Native SwiftUI macOS client that connects to any Open WebUI server - On-device voice mode — STT and TTS run locally via RunAnywhere SDK (Whisper ONNX or WhisperKit on Apple Neural Engine), only the LLM call goes to your server - Realtime transcription with speaker diarization (FluidAudio — Pyannote + WeSpeaker, all on-device) - Sparkle auto-updates, keyboard shortcuts, floating voice panel Why on-device voice? Privacy — your audio never leaves your Mac. Latency — no round-trip for STT/TTS. And it works offline for transcription. Stack: SwiftUI, RunAnywhere SDK (sherpa-onnx + WhisperKit), FluidAudio for diarization, Socket.IO + SSE for chat streaming. Would love feedback, especially on the voice pipeline architecture.