WebAssembly 2

Open-source browser AI components for private, offline applications
LocalMode UI is an open-source, MIT-licensed toolkit and shadcn-style registry for building privacy-first AI interfaces that run entirely in the browser. It provides more than 100 copy-owned React components and 36 installable blocks for chat, RAG, vector search, vision, audio, agents, privacy, and developer tools. Models run locally through WebGPU or a WebAssembly fallback, so applications can work without servers or API keys and keep user data on the device.

Browser-based private AI speech-to-text transcription
Whisper Web is a browser-based AI speech recognition tool powered by OpenAI Whisper. It transcribes audio in 100+ languages locally in your browser using WebGPU and WebAssembly, so no data leaves your device in Free mode. It also offers an Unlimited cloud plan for longer files and batch uploads.