Way more affordable than Webex. Openco's video conferencing tool is quite like theirs but, instead of providing just rooms they rent whole conference servers for about the same price as webex offers a single 25 participants room.
They're a startup so a few features that webex has seem to still be missing. I didn't see a scheduler for example, but for the price they can't be beat.
I love how it is REALLY green! Openco.org creates a CARBON NEGATIVE FOOTPRINT when you register to use their web conferencing service. How awesome is that?!