There is no good way of searching assembly in you GAC unless you have GAC Browser with you. GAC Browser is powerful tool to search and remove assembly. It is must have tool for any developer dealing with assemblies. Also, visibility in GAC is increased with more info like when it was last GACed. Provides option to deassemble the assembly using .NET tool ILDASM. GACBrowser supports, · View All Assemblies form GAC. · Search assemblies based from part of assembly name or public key. · Sort the searched list based on any assembly attribute. · Select one or more assemblies and remove them. Application can remove assemblies which is installed by any installer. · Refresh search assemblies. · Deassemble the assembly using .NET tool ILDASM