I am not sure where to post this. So i do it in my "home" forum

We recently had a discusison about using "Browser on a Prim" for online tutorials.
The idea was to use a remote access software which allows to watch a remote desktop from a browser window. There is at least one solution on the market, which claims, that they only need javascript on the browser side... We have done some tests and we failed. The software we wanted to use does open subwindows and it works with https
Second Life does not seem to support https?. And i doubt, that it supports subwindows (popup windows). When i enter the link to the remote desktop page on my land, my SL client simply shows the media texture and the hour glass. Eventually the browser becomes very very slow, but nothing happens on the media prim.
We also have tried something with a streaming server some time ago, but the results where not satisfying. Especially there was near to no synchronisation between the streaming media and the in world voice system. And the source computer would need high resources in order to drive a 3D application plus a streaming source driver...
So has anybody ever tried such a thing like desktop on a prim ? And if so, what is a reliably working method ?
Thank you for any hint.