Firefox may not be the most popular browser these days, but it's still the most configurable -- right down to the smallest little pixel. If hunting through about:config is too tiring, though, free add-on Configuration Mania lets you tweak lots of options through an easy-to-browse panel.

With the new jailbreak for iOS 6, it's time to start playing around with all the handy apps and tweaks on your newly-freed device. Here's a look at some of our favourites available in Cydia for iOS 6.

Android: We've established that there's an Android keyboard for all types, but Kii Keyboard is a new entry to the field that offers themes and layout options along with the features you love from other popular keyboards, all for the low price of free.

Reader A.Nonymous decided to create his own minimalist "undesktop" to keep himself productive — clearing away everything unnecessary, auto-hiding the taskbar, and using keyboard shortcuts to get things done more effectively.

Ed. note: Reader, Harsha Kotcherlakota, wrote in to our tips box with a very detailed, very cool guide to how he uses a few Firefox extensions we've featured to create dedicated, always-available-yet-unobtrusive tabs for Gmail and Google Reader. Here's how.

After we wrote about the All-Glass Firefox theme, reader bc//G_A wrote in with an even more impressive customisation that enables the Aero Glass effect across almost every UI element.

Firefox with Greasmonkey (and other browsers): The Helvetireader theme for Google Reader strips away the bells and whistles and offers a minimal interface redesign for keyboard shortcut users. Install Helvetireader in Firefox with the Greasemonkey extension, Opera, a Chromium nightly build, or Safari with Greasekit. With Helvetireader enabled, GReader uses red and black Helvetica font and white background with a light grey gradient. Especially suited to work in Reader as a Fluid or Prism standalone app, Helvetireader is a free download.

Helvetireader

Windows XP only: When you right-click on your desktop or on a file, do you have to go through two dozen useless menu items before you hit the one you want? Free utility Mmm offers an easy interface for hiding and organizing context menu items—into a "Rarely used" subfolder, for example. With Mmm running, hit the coloured button it adds to the top left of the menu to see the configuration area, shown here. Check out the before and after photos of my context menu using Mmm.

Firefox user Asian Angel loves Portable Firefox for projects like creating a Google Chrome clone, but you can also use it to run multiple, sandboxed instances of the browser at the same time. What's the point? Well, it lets you log into multiple accounts at the same service (like Gmail) in different windows, and run certain extensions and styles in one browser instance but not another. Using Portable Firefox you can easily back up your customised installations and run them anywhere. Reader Asian Angel explains how she assembled a colorful "Firefox six pack" using the portable app.

Next time you wipe your PC's hard drive clean and reinstall Windows with that old installation disc, you don't want to connect your fresh, unpatched and vulnerable system to the internet only to download 176 new updates from Microsoft. If your XP installation CD is older than 2004, once your system is online, you'll have to wait for hefty service packs to download, chained to your mouse while pushing the Next button, watching progress bars, and rebooting multiple times. Wouldn't it be better to start your installation, head out to run errands or grab coffee, and come back to an up-to-date system before your system gets online? It's possible, using some free software and a blank disc. After the jump, I'll show you how to create an automated, customised XP installation CD or DVD, that includes Microsoft's official-but-not-released Service Pack 3 for Windows XP.

Windows only: Free customisation utility XNeat adds a few unique functions to the rich library of tweaking utilities, and some might become must-installs for Windows power-users. The most notable are the additions to the standard "Save As" dialog: an option to create a numbered "clone" file when you're about to save over an existing document (i.e. "Paper(1).doc"), and a time-stamping utility that adds numbered dates to filenames automatically. XNeat also lets you enable drag-and-drop taskbar re-ordering, giving you your preference of left-to-right app layout, and a full set of windows management tools, including transparency and system tray docking. XNeat is a free download for Windows XP and Vista only.

Xneat