Sortd - Rated the #1 App for Gmail
Shortwave Bookmarklet - Shortwave is an extensible quick-search and shortcut bookmark.
Gmail Add-ons - Work with your favorite business apps directly in Gmail
Shortmarks - Shortmarks is like an enhanced speed dial for web browsing.
Asana for Gmail - Turn emails into tasks without leaving your Gmail inbox
Tampermonkey - Greasemonkey compatible script manager.