The Greasemonkey extension has long been one of our favorite tools for Firefox, allowing us to bend the web to our will with light and simple scripts written in JavaScript. Now most Greasemonkey scripts work in Chrome, no extension required.
Google Chrome extension A Bit Better RTM is one of our favorite ways to tweak the popular Remember the Milk online to-do list web app, and now it's been ported as a native Google Chrome extension.
Firefox with Greasemonkey: We use galleries sparingly around these parts, but some of you just don't like Gawker's new gallery layout. Thanks to one script-savvy Lifehacker reader, you can now install a user script that'll get rid of our galleries for good.
Firefox: Gmail recently made a few tweaks to its message count API, leaving tools like the favicon message indicators by Eric Bogs and Peter Wooley, along with Gina's own Better Gmail 2 Firefox extension, broken. Now they're fixed.
The nightly builds of Google Chrome's open-source foundation, Chromium, includes a feature that might mean great things for Greasemonkey fans. Click on a user script file, such as at UserScripts.org, and Chromium asks to install it as a working extension.
Firefox: If you liked the look of Zen Habits' Minimalist Gmail adaptation, but don't usually roll with Greasemonkey scripts, a coder has put together a single Firefox extension that can hide header, footer, and sidebar elements for an elegant look.
Firefox with Greasemonkey: If you're going to spend your time on Facebook, you can at least make it quicker to browse through and confirm that nothing earth-shattering has occurred. A simple Greasemonkey plug-in assigns Facebook sections to simple keyboard buttons.
Firefox with Greasemonkey: Previously mentioned Stylish script Google Reader Absolutely Compact removes a lot of the Google Reader interface to get more on-screen, but for some it takes away too much.
Firefox users have Flashblock and other extensions to cut down on memory-hogging, browser-destabilizing Flash animations thrown haphazardly around the web. If you're a Google Chrome convert, BlockFlash2 can offer much the same protection against random moving objects.
We've long been fans of using user scripts to change the way the web works, but since Greasemonkey only runs on Firefox, Opera users are usually left out in the cold.