Flarum - Flarum is the next-generation forum software that makes online discussion fun. It's simple, fast, and free.
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.
XenForo - Intuitive. Social. Engaging. Fast. XenForo brings a fresh outlook to forum software.
WebEx - Cisco WebEx Web Conferencing, Online Meetings, Desktop Sharing, Video Conferencing
Discourse - Discourse is an open source discussion platform built for the next decade of the Internet.
GoToMeeting - GoToMeeting is a web conferencing service offering a range of services which are available on Mac, PC, iOS and Android devices.