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sdr-bullet

A real software radio, running entirely in the browser. WebUSB drives an RTL-SDR dongle, the whole DSP chain — decimation, FFT, and FM/AM/SSB demodulation with stereo and RDS — runs in Rust compiled to WebAssembly with SIMD, and the waterfall and constellation are drawn on the GPU with WebGPU. Bring a Blog V4 and a Chromium browser; the station name decodes out of the noise.

Needs a Chromium-based browser (WebUSB is Chromium-only) and an attached RTL-SDR. On Linux, blacklist the kernel DVB driver first — see the project docs. WebGPU lights up the waterfall where available; without it the audio still runs.