For visual browsing of ITU space database files, intersystem interference calculation, intersystem frequency overlap analysis and frequency coordination support.
SATSOFT is used for communication satellite antenna design, analysis, and coverage planning. Quickly assess antenna coverage and gain, conduct antenna trade studies, develop shaped beam and multibeam antenna designs, and perform other satellite payload engineering tasks.
RPC Telecommunications have developed a host of satcom related software tools including Sat-Coord above. See this site for more information, or for custom built software solutions.