How can I load two versions of same assemblies into two different domains from two different subfolders?
See the question and my original answer on StackOverflowIf you don't want to recompile the assemblies with a different strong name, than you can load them into different AppDomains, with different setup configuration, and different .config files, exactly like IIS does with multiple web sites, each one in its one AppDomain, completely independent, all hosted in only one AppPool process - w3wp.exe.