There are both Windows & Mac versions of BaseCamp and the Windows one is a .NET application. From the system requirements for Windows: "Microsoft® .NET framework 3.5 SP1 is required. A current version of .NET will be installed if needed."

I've been using the Windows version and haven't experienced any problems.
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Victory awaits him who has everything in order — luck, people call it. Defeat is certain for him who has neglected to take the necessary precautions in time; this is called bad luck. Roald Amundsen