The following services allow you to conference and chat online
with audio, video and even screen sharing. These are
commercial services hence have some limitations on creation
of meeting, number of user who can join a meeting.
Google meet - ! ! ! ! ! ! ! !
Allows 250 participants for video conference, requires login to
create a meeting . It can be broadcasted to around 1,00,000
viewers.
To create a meeting in google meet one requires an
email account running on G-Suit.
(If the email service for your organisation powered by
gmail then you are a G-Suit member)! ! ! !
Google Hangout -
Allows 25 participants for video conference and 150 for text,
requires a gmail account. !