Airspy WebSpy: A High Performance Web UI Client for Airspy SDRs
Over on X @lambdaprog, (aka Youssef Touil), the creator behind the Airspy line of software-defined radios, has been teasing development of a new web client called "WebSpy" for Airspy software-defined radios. The web client allows users to tune in to a remote Airspy SDR via a web browser interface that mimics the SDR# Windows software. Before WebSpy, it has only been possible to access Airspy devices remotely via the SpyServer server software and the SDR# Windows application.
While the software is still in development and not yet available for download, you can access a demo version (HF server) (Broadcast FM server) that Youssef has currently set up on his own server in France. From the X posts on the development of the software, it seems that WebSpy boasts some impressive efficiency in terms of the low 6 kB/s network bandwidth required. This means that even over slow connections, the FFT and audio should be smooth and clear. The web interface also works well on mobile, providing a touch-optimized interface.

It's crazy what you can do with a 6 kB/s link budget nowadays. #airspy #sigint pic.twitter.com/JIItTgTqOb
— prog (@lambdaprog) July 12, 2026