If Xstand lets you attach an iPad for use in controlling a Mac Mini (for example) then you might be able to make some link between them. Their documentation is behind a login screen: https://apps.adnx.com/en/support/docs, so I’m not sure how much I can help.
Hype can run on any browser, but for it to be able to control the contents of another window you would need to find a way to either link up commands from the touch screen to route through a server, or perhaps there’s some built in continuity-like tool that Xstand produces which can help with this.
There might be a serverless solution if you use a protocol like Webrtc. Here’s a demo: http://www.html5rocks.com/en/tutorials/webrtc/datachannels/