Application Linking (AppLink)
By default, two virtualized applications are isolated from each other. Application One cannot see files or registry entries virtualized in Application Two's package. The ThinApp feature AppLink lets packagers allow full integration between two or more packages. AppLinking packages will effectively merge the different virtualized environments into one big environment. ThinApp supports up to 250 packages linked together but in reality you will never AppLink that many packages together.
There will be a penalty in the startup time for each AppLink and pretty soon your implementation will become too complicated to maintain and manage. Try to limit the amount of AppLinks between five to ten.
AppLink will allow you to package ...