UberSDR is a free, powerful, web-based Software Defined Radio platform for amateur radio enthusiasts, providing real-time access to the entire HF + 6m spectrum and multi-band WSJT-X skimming. Support for third party software via SoapySDR as well as a native desktop client. Based on the affordable RX-888 MKII and generic PC hardware. Powered by ka9q-radio.

https://batchdrake.github.io/SigDigger/

With a Raspberry Pi and hardware like an RTL-SDR or HackRF, you can receive signals, track aircraft and ships, decode transmissions, and even transmit with proper hardware and licensing.

Surely by now you’ve at least heard of RTL-SDR — a software project that let’s cheap TV tuner dongles work as a software-defined radios. A number of projects and tools have spun o…