CommCat 4 is a radio control and logging program for radio amateurs who share a passion for talking to other hams around the world. CommCat works with most popular radios and accessories. It requires a Windows XP or later computer. CommCat 4 is compatible with the Vista and Windows 7 operating systems. (Seems to run on Windows 10, but vendor has not tested.)

CommCat is packed with features to help you find and work DX. Its acclaimed rule-based spot manager filters incoming spots from the Internet and alerts you when a needed DX station is present. The DX Tracker and Band Spotter windows help you analyze activity and operating habits.