HDSDR is described as 'freeware Software Defined Radio (SDR) program for Microsoft Windows 2000/XP/Vista/7/8/8.1/10'. There are more than 10 alternatives to HDSDR for Linux, Windows, Mac and Android. The best alternative is Gqrx, which is both free and Open Source. Other great apps like HDSDR are CubicSDR (Free, Open Source), SDR# (Free), GNU Radio (Free, Open Source) and SDRangel (Free, Open Source).
- QRadioLink is a multimode SDR transceiver application using VOIP communication (radio over IP), built on top of GNU radio, which allows experimenting with software defined radio hardware using different digital and analog radio signals and a Qt5 UI. View 6 alternatives to QRadioLink
- Free • Open Source