The Google Talk downloadable application for Windows offers many features for communicating with your friends and family.
Instant messaging — Chat with all of your Google Talk and Gmail contacts in real time.
Free PC-to-PC voice chat — You can talk to anyone else for free who's online and has the Google Talk client.
Send and receive voicemails— If the person you're calling isn't available, you can leave a voicemail. Learn more
Unlimited file transfers — Send files to your contacts. There are no file size or bandwidth restrictions.
Gmail notifications on your desktop — When you're signed into Google Talk, you'll be notified of new messages in your Gmail inbox.
Gmail, Google's free email service, offers built-in chat using the Google Talk network.
Built-in chat — Gmail has chat built right in, so you can easily switch between emailing and instant messaging with your contacts.
Video chat — See and hear your friends with high quality video.
Voice chat — Free PC-to-PC voice calls to any of your Gmail contacts.
Invisible mode — Appear to be offline when you don't want to be interrupted.
Group chat — Invite multiple people to chat with you in a group.
Chat history — If you use Google Talk with a Gmail account and all of your chats are saved to a searchable archive in Gmail.
Reply by chat — When the contact who sent you an email is online (in Google Talk or Gmail), you have the option to reply to that person by chat.

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