Social Video Conference

Get flash to fully experience Pearltrees

https://hall.com/

Chat and collaboration for companies, teams and communities | Hall.com

File Sharing Upload and share files in your War Room with your team and co-workers.

Convore

Free video chat API and Widgets | TokBox

Skype

Windows Live 2011: la nuova generazione di servizi per comunicare con il tuo mondo

http://messenger.yahoo.com/

Yahoo! Messenger - Chat, Instant message, SMS, Video Call, PC Calls

Just sign into Yahoo!

ooVoo - Videoconferenze

Video Chat

http://www.oovoo.com/home.aspx