Some of the open source software I use with my ham radio include the following:

• xlog a very simple logging program with ability to export to the ADIF (Amateur Data Interchange) format
• Trusted QSL for digitally signing logbooks for submission to Logbook of the World (LoTW)
• fldigi a digital communications program for modes such as PSK31, RTTY, Olivia, and CW
• flrig a program that provides software radio control
• WJST control software for weak signal HF digital communcations (like FT4 and FT8)
• Raspberry Pi Zero Digital Voice Modem (MMDVM) running Pi-Star

To see and hear signal reports of ham radio transmissions I make use of web sites like these:

• PSKreporter a site that gathers near real-time reception records of digital transmission activity
• Software-Defined Radio receivers on the web
• WSPR The Weak Signal Propagation Reporter Network
• Logbook of the World