Cisco-owned WebEx is the Rocky to GoToMeeting’s Apollo Creed. Pound for pound, they’re just about evenly matched. Full-fledged videoconferencing features are available for meetings with up to 100 participants, including desktop sharing, whiteboarding, collaborative document management, and remote control of other computers on the call.
A more basic three-participant system is available for free, but unlike GoToMeeting. you’ll have to register for an account before you use it. On the other hand, even free WebEx users get 250MB of online storage space to stash their documents, so it might be worth the signup time.
Platforms: web (Free only), Windows, Mac, iOS, Android, Windows Phone, BlackBerry
Pricing: free (up to 3 participants) to $89 per host/month (up to 100 participants)