Glip is fully searchable, real-time group chat; video chat, task management, file sharing app.

Voxeet is VoIP web conferencing software that uses 3D high definition voice technology to produce immersive sound.

Kopano is an open-source groupware application suite originally based on Zarafa.

Limnu is an online whiteboarding app.

Mikogo is a desktop sharing software application for web conferencing and remote support.

GoToMeeting provides easy online meetings with HD video conferencing.

dualmon is a free remote desktop and remote support software.