GNU Radio in the Browser

A GNU Radio Companion-style editor runs fully in a browser tab, compiling the GNU Radio DSP stack and Qt GUI sinks to WebAssembly so users can build and execute SDR flowgraphs without Python, installation, or a server. It supports native .grc files, includes example flowgraphs and IQ recordings, and can control RTL-SDR, PlutoSDR, or HackRF devices via WebUSB, displaying live spectrum, waterfall, and constellation plots.