extensions
Get flash to fully experience Pearltrees
greasemonkey
Chrome Dual View Lets You Split Chrome in Two
Whether you want to split the screen to compare two things side by side or to take advantage of your expansive widescreen monitor, the dual view bookmarklet splits your web browser in two.
Reveal
What is Reveal? Reveal is an extension for Firefox 1.5 or newer. It was created for the Extend Firefox contest.
