Software

GNU/Linux – main OS since 2005, now mainly on Xubuntu, also in use: RPi OS, MX linux and for older hardware: AntiX

Tucnak – excellent (not only) VHF-UHF logger with KST and AS support, multiplatform, works great even on Android phone :)

WSJT-X – Original JT-modes software, works great in a combo with Raspberry Pi 4/5 + VNC, or even for remote audio CW with a mumble server + client

TR4W – HF CW/SSB/RTTY contest logger, runs great in Linux through WINE

Not1MM != N1MM – interesting opensource clone of N1MM

trLinux – oldschool TR log ported for Linux

Quisk – SDR transceiver, support various hardware, fully customizable in Python

Glfer – QRSS spectrograph

fldigi – Multimode multiplatform modem and logger for digimodes, see my macros for RTTY/PSK contesting

CQRLOG – Multiplatform logger from Petr OK2CQR

MMANA – Original version of antenna analyzer by JE3HHT, runs in WINE