Use Gmail? Get Xoopit! Upgrade Gmail to search, browse & share files, photos & videos. Use Google Search while composing mail in Gmail. Get information about people in a Gmail conversation. Xoopit works for Gmail, Google Mail and Google Apps users.

For Firefox users, Xoopit adds a lot of functionality to Gmail, including better searching, organizing of all your attachments, disambiguation of emails etc. I have been using it for a while. Makes Gmail the thing I always wanted it to be…

https://addons.mozilla.org/en-US/firefox/addon/8257