Simply input the Earth Station Latitude and Longitude, and then the Satellite Latitude and Longitude, and this calculator calculates the Azimuth angle, the Elevation Angle, and the Range.
RPC Telecommunications have developed a host of satcom related software tools. See this site for more information, or for custom built software solutions.
Satellite Signals is a technical information site in the UK providing a satellite dish pointing angle calculator with azimuth angles relative to magnetic north, list of satellites, link budget calculator, broadband high speed direct two way internet access via satellite and general VSAT information.
Arrowe Technical Services - developers of Satmaster PC software for the satellite professional. Tools for link budgets, satellite aiming, modified polar mounts, dual feeds and sun outage prediction.