I have been looking for a solution to virtualize my desktop application as a SaaS. After picking Citrix XenApp as the best solution for my case and trying for ever to get it to work (with some more experienced people) I can't help but to conclude that Citrix has too much problems for my case. Every time I fix one thing some other thing pops up.

As I can't imagine Citrix XenApp is the only way to deliver my application to my clients, I'd like to ask you experienced guys if you think there is an other way to deliver it whilst meeting my requirements. I've got no money issues - time on the other hand...

My requirements:

• My application must run on a windows server;
• The application should be virtualized with the application window only (no desktop);
• Content Redirection (my application is the only one virtualized, so PDF, DOC(X) etc. is on the users' system);
• Easy user management;
• SSO;*
• Cross platform (Windows, Linux, Mac OSX).*

I truly hope I don't annoy you with another of the same question. I've tried to find the same question here and - obviously - didn't found it.

*) these I can live without, however very much appreciated