Firefox plugin which allows you to customize the way a webpage displays using small bits of JavaScript.
Hundreds of scripts, for a wide variety of poular sites, are already available at http://userscripts.org.
You can write your own scripts, too. Mark Pilgrim's definitive Greasemonkey guide, diveintogreasemonkey.org will show you how.
WordPress
in 198 toolboxes Flexible open-source content management and blogging software with an active user and developer community and a wide variety of plug-ins or extensions available.
Firefox
in 345 toolboxes Firefox is the popular open source web browser from Mozilla
Delicious
in 173 toolboxes Web based social bookmarking lets you share online finds and discover new ones. Ground zero for tagging.
Google Earth
in 83 toolboxes Google Earth combines satellite imagery, maps and the power of Google Search to put the world's geographic information at your fingertips.
Gmail
in 159 toolboxes Gmail is a web-based email with very user-friendly interface and huge storage capacity
Firebug
in 51 toolboxes The ultimate in-browser code-monkeying and debugging utility. An undeniable reason to switch to Firefox. Installs as a toolbar in the browser.
Google Maps
in 55 toolboxes Maps and directions anywhere in the world.
