Yes, .NET has had Application Domains since the beginning. It can be used for exactly this purpose. "You can run several application domains in a single proces

Yes, .NET has had Application Domains since the beginning. It can be used for exactly this purpose. "You can run several application domains in a single process with the same level of isolation that would exist in separate processes, but without incurring the additional overhead of making cross-process calls or switching between processes. The ability to run multiple applications within a single process dramatically increases server scalability." http://msdn.microsoft.com/en-us/library/2bh4z9hs.aspx http://msdn.microsoft.com/en-us/library/2bh4z9hs.aspx