ClickMeeting - Collaborate with partners and clients using ClickMeeting professional web conferencing software. Try it now, FREE!
qTox - A Qt graphical user interface for Tox.
Zoom - Equip your team with tools designed to collaborate, connect, and engage with teammates and customers, no matter where you’re located, all in one platform.
Tox - Send messages, files, create groups and make Tox to Tox audio and video calls. Securely.
BigBlueButton - Engage Your Online Students. BigBlueButton is a web conferencing system designed for online learning.
Toxic - Toxic is a client with an ncurses interface, written entirely in C.