Using Google Chat at work or school
Send instant messages to other Gmail users with the Google Chat gadget.
Send instant messages
Send instant messages
Use Google Chat to send instant messages and use voice and video chat.
Install Chat for Google (Chrome extension) 
Send and receive chat messages even while your Gmail window isn't open. Works only with the Chrome browser.

Learn more and get Chrome now!
Install the voice and video plug-in
Instantly add voice and video chat to your Google Chat gadget!  Works on any browser
Google Chat Help Center
Find out more about using IM, voice, and video chat with Google Chat.
More resources

Chat Help Center
See more Google Chat topics.

Chat product forum
Discuss topics with Google guides.

Apps administration
Get help managing Google Chat for your organization.