Morse runner is a program that simulates a contest. It simulates, pileups, other guys grabbing your frequency, QRM, QRN, major timing cockups and will drive you to distraction if you crank it up to just above your own ability. It is a morse code contest simulator that can be used by anyone.
Ham CAP is a free HF propagation prediction tool for Amateur Radio. The program requires the previous installation of the VOACAP application. You will have to click on the Ant tab in order to select the appropriate antennas, and verify the antenna patterns.
Rocky is a SDR software for the SoftRock radio. It talks directly to the WDM driver of the sound card. This ensures the lowest possible latency, eliminates a number of problems associated with the Windows K-Mixer, and allows smooth audio streaming between two souncards.