an online platform that provides videotelephony and online chat services through a cloud-based peer-to-peer software platform and is used for teleconferencing, telecommuting, distance education, and social relations.

An online company whose offering a communication, collaboration, and coaching platform to K-12 schools and teachers. Its network enables teachers to share content, distribute quizzes, assignments, and manage communication with students, colleagues, and parents

It is a video conferencing service from Google. It was originally only available to enterprise customers, but everyone can now use. It's primarily designed as a way to host video meetings.

A free and open-source cross-platform streaming and recording program .