*[https://www.gnuradio.org/ GNU Radio] - toolkit that provides signal processing blocks to implement software-defined radios and signal processing systems.
*[https://github.com/cjcliffe/CubicSDR CubicSDR] - is a cross-platform Software-Defined Radio application which allows you to navigate the radio spectrum and demodulate any signals you might discover.
*[https://github.com/audacity/audacity Audacity] - is a audio editor that can be used to cleanup the radio waves captured by a [[Wikipedia:Software-defined_radio|SDR]] or Software Defined Radio. (Example: Start Audacity -> Import –> Raw Data -> Radio Wave File)