A completely reimagined, ultra-lightweight JavaScript runtime built in C.
Designed from day one for local AI development, edge IoT, and raw performance.
Modern JavaScript runtimes have grown massive. We built Sofuu natively in C to strip away the bulk, achieving a ~1.1MB binary size and ~3ms startup times.
It drops the legacy browser APIs and massive package ecosystems you don't need, and directly integrates the tools you actually want today:
- 🧠 Automatic AI Streaming: Native integrations with local/cloud LLMs without
npm install openai. - 🔌 Built-in MCP: Model Context Protocol Server & Client running directly over stdio at the C level.
- 🧮 Hardware SIMD Math: Connected JavaScript directly to your CPU's vector registers (NEON/AVX2) for instant embedding searches and cosine similarity.
- 🌐 Zero-Dependency Web Server: An asynchronous HTTP multiplexer directly over raw OS sockets.
Install the runtime globally on macOS or Linux (x86_64 / arm64):
curl -fsSL https://sofuu.xyz/install | sh