Older Google Talk Version Download Link (Official)

Google has already replaced Google Talk app with Google+ Hangouts and closed the official download link for Google Talk to reduce confusion and fragmentation. But still many of us want older chatting app from Google as it offers you the advantage of viewing the status of your Gmail inbox without having to log into the mailbox directly. Once you set the app running, it pops up with notifications of new mail or chat contacts trying to reach you. You'll be able to see a snippet of the message you've received, and if there's multiple unread messages in your Gmail inbox, you can quickly scroll through your notifications by clicking the arrows at the bottom of the window.

In case, If you don't want to see notifications for all the new messages in your Gmail inbox, you can right-click the notification window when you're finished reading.

If you want to go straight to a message from the notification. You can highlight the envelope in the left corner of the notification, and click it when it turns red. Your new message will appear in a new browser window.

Here is a download directly from Google:
http://dl.google.com/googletalk/googletalk-setup.exe