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.
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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
Anonymizes Google Chrome by removing its uniquie ID. Free download of UnChrome 1.0p
Most popular userscript manager for Google Chrome. Free download of Tampermonkey 3.12.4720 Beta