Multiple Launch Prevention - Citrix Alternative

I'm assuming you're talking about resources that are presented on the APM Full Webtop.

I'm not aware of any features like this, no. If you were feeling ambitious, it would not be too difficult to implement this in APM yourself by adding some javascript to keep track of the launched resources and preventing re-launches.

We'd like to capture this feature request though -- could you open a support ticket to request it? That way it can be tracked.