Gqrx - Gqrx is a software defined radio receiver powered by the https://alternativeto.
SDRangel - SDRangel is an Open Source Qt5 / OpenGL 3.
Universal Radio Hacker - The Universal Radio Hacker (URH) is a software for investigating unknown wireless protocols.
SodiraSDR - Software Defined Radio (SDR) for analog and digital modulation modes
SDR# - High Quality Software-Defined Radio (SDR) receivers from DC to Daylight for Governments, Professionals, Academics and Hobbyists.
sdrangelove - Redmine