Greasemonkey - Scripting for Firefox

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Greasemonkey is a Mozilla Firefox extension that allows users to install scripts that make on-the-fly changes to most HTML-based web pages. 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 functionality to web pages (for example, embedding price comparison in Amazon.com web pages), fixing rendering bugs, combining data from multiple webpages, and numerous other purposes. Well-written Greasemonkey scripts can integrate changes so well that their additions appear to be natural parts of the web page.

from Wikipedia

Greasemonkey for Users 

Firefox Required

Once you have the Greasemonkey addon installed, there's a heap of scripts that you can get to improve your daily web browsing experience.

My User Scripts 

Here are a few user scripts that I have created:

Squidoo Workshop Addon for Firefox
This adds extra features to the Lens Workshop and a few other pages on Squidoo. The most significant improvements are: large text boxes, colored tags, detailed stats, integrated ping and improved support for Groups.
Cleaner SquidU
Tidies up the SquidU Forum interface, and adds highlighting.
Twurl Link Info
Shows information about all Twurls found when on Twitter.

Other Good Scripts 

I have found a few scripts that have proved to be quite useful:

Google Reader - Colorful List View
Colorizes the item headers in Google Reader list view
Intercepter
In twitter.com: replace short and meaningless tinyurls with the domain of the actual web site using tinyurls' preview feature.
Twitter Hashtags
Adds links to hashtags.org or twemes.com to tweets on twitter.com

Greasemonkey for Developers 

You can use Greasemonkey to build your own personal scripts, or as an alternative to making a stand-alone plugin. If you already know Javscript and modifying the DOM tree, then writing your own scripts will be easy to do.

Blog Posts from Greasespot 

Greasemonkey Release 0.8.20090123.1
In preparation for Firefox 3.1, we're releasing a new version of Greasemonkey, marked as compatible with Firefox 3.1b2, along with additional changes and fixes: Added translations: ar-SA, bn-IN, hu-HU, id-ID, ro-RO, sr-RS, vi-VN. ...
Greasemonkey Version 0.8
At long last, the new version of Greasemonkey is available. Get Greasemonkey 0.8.0 from addons.mozilla.org. The most important change for this release is full compatibility with Firefox 3.0. There is also a new feature that allows ...
Greasemonkey Security Update
I've just posted an update to Greasemonkey that fixes a recent publicly disclosed security issue. Please upgrade to the latest version as soon as possible. Note that this update might affect compatibility for a small number of scripts. ...
Greasemonkey 0.7 Candidate
Hello all, Since there were some pretty major problems with the last release that caused significant grief, I've rethought how releases will work. Going forward, we will: Do candidate releases to greasemonkey-dev and greasemonkey-users. ...

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