If you are using the stand-alone Agentry Server, then NO, just 1 application.
If you are using SMP 2.3, yes it can run multiple applications.
If you are using SMP 3.0 then no, currently only just 1 Agentry application, which will change in the next SP.
If you can multiple applications on a device at a time. If you are using Windows just install the clients to a different folder. If you are using iOS or Android you will need to brand the client so they have different names.
Stephen