Someone asked me for an alternative for WebEx because they were trying to find something cheaper. I did a little searching, and I found these couple of websites.
RKG: Free alternatives to Webex, Camtasia, etc
The CrossLoop option caught my eye, and I found this website as a result:
AlternativeTo sounds like a create website that I will have to do some more exploring. There are other websites that have the same stuff on it: