Adobe Connect is a Webinar tool that doesn't suck.
It uses AIR right? Then... it kinda sucks. Ask any long-time League of Legends player about the client (made in Adobe AIR) you'll know what I mean.
I do not believe Adobe Connect uses AIR. In a desktop browser; it uses Flash Player.
I thought the mobile client was built natively (Objective-C) on iOS, but don't quote me on that.