Greasemonkey is a Mozilla Firefox extension that allows users to install scripts that make on-the-fly changes to HTML web page content on the DOMContentLoaded event, which happens immediately after it is loaded in the browser (also known as augmented browsing).
As Greasemonkey scripts are persistent, the changes made to the web pages are executed every time the page is opened, making them effectively permanent for the user running the script.
Greasemonkey can be used for adding new functions to web pages (for example, embedding price comparisons within shopping sites), fixing rendering bugs, combining data from multiple webpages, and numerous other purposes.
... contents. It works well with most of the greasemonkey scripts. By default AutoPager works with a ton of sites, including Lifehacker, the New York Times, Digg, and, of course, Google. If you want to add your own custom autopaging to unsupported sites, the site wizard feature makes it easy (first .... Free download of AutoPager 0.8.0.10
... specify "User-defined" items to have FEBE backup Thunderbird, Greasemonkey scripts, or virtually any data on your computer - Firefox related or not. .... Free download of FEBE 8.8
A Chrome add-on that will enable you to push content on your mobile device. Free download of Nokia Drop for Chrome 220.127.116.1115 B
Customize the way a web page displays. Free download of Greasemonkey 3.6
Make your pages faster with Yahoo!'s page performance tool. Free download of YSlow 3.1.2
Can preview videos and music in a built-in media player. Free download of NetVideoHunter 1.18