Many hams use HamClock by Elwood Downey-WB0OEW. Due to Elwood’s recent death, HamClock will apparently stop working at the end of June.
Some enterprising folks have put together an updated version of HamClock, known as OpenHamClock. The version runs on Windows, Linux, or RPi and is open source. The software is housed in a GitHub repository that contains documentation. The URL for the repository is https://github.com/accius/openhamclock
I have loaded it on Windows, Linux, and RPi and found that it works well. The software is being updated regularly. It looks like a nice replacement for HamClock. A screenshot of OpenHamClock running in my shack is shown below.
