Joel Bennett's Library tagged MultiProtocol →  View Popular

VoxOx challenges Skype, Google Voice, and Gizmo Project with low prices ($2.45/mo unlimited calling) and bucketloads of features including a free phone number, call screening, "follow me", 20 party conferencing, video calling, plus things you haven't seen elsewhere like multi-protocol IM and social networking, built-in dropbox-style file sharing, and fax support.

www.voxox.com/home.php - Preview

Apps VOIP IM Skype Gizmo Free MultiProtocol CrossPlatform

Video conferencing and messaging with multiple people all at the same time, including with users of IM networks, etc.

www.tokbox.com - Preview

Apps Collaboration Conferencing MultiProtocol Chat VideoConferencing Free

digsby is a multiprotocol IM client that lets you chat with all your friends on AIM, MSN, Yahoo, ICQ, Google Talk, and Jabber with one simple to manage buddy list.

www.digsby.com - Preview

apps chat freeware im inet multiprotocol