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.
GitBook - Modern Publishing, Simply taking your books from ideas to finished, polished books.
WebEx - Cisco WebEx Web Conferencing, Online Meetings, Desktop Sharing, Video Conferencing
MkDocs - Project documentation with Markdown.
GoToMeeting - GoToMeeting is a web conferencing service offering a range of services which are available on Mac, PC, iOS and Android devices.
Docusaurus - Easy to maintain open source documentation websites