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lifehacker.com - 12 readers - Windows users have a ton of system tweakers to choose from, but we love the Ultimate Windows Tweaker the most. It has a ton of different tweaks you can perform, it's portable, super lightweight, and completely free.
lifehacker.com - 11 readers - If you want to tweak settings and run maintenance scripts in Mac OS X, you can always take it to the command line. On the other hand, you can always turn to one of the few system tweakers available to get the job done from a graphical user interface (GUI). Our favorite is OnyX for its exhaustive feature set that provides both basic and easy opti...
lifehacker.com - 11 readers - There aren't a ton of system tweakers for Linux, but we have to give a shout out to the very useful Ubuntu Tweak. It can change tons of extra settings in Ubuntu, make applications easy to install for beginners, and clean up unnecessary files on your system.
lifehacker.com - 9 readers - We love keyboard shortcuts and we love Gmail. This minimalistic Gmail cheat sheet brings the two together, visually highlighting the shortcuts that will help you use Gmail faster and easier.
lifehacker.com - 15 readers - Microsoft Word offers many—at least 247—keyboard shortcuts to speed up your document creation workflow. If you don't know all of them yet, grab this PDF or doc file as a handy reference. You can follow or contact Melanie Pinola, the author of this post, on .
lifehacker.com - 19 readers - When we showed you how to master highlighting text with your mouse, commenters were quick to point out keyboard alternatives. Considering keyboard shortcuts are our first and only serious love, here's a few handy ways to navigate text without leaving the keyboard.
lifehacker.com - 12 readers - Save some time (while wasting time) on Facebook with handy keyboard shortcuts for quickly getting around the social networking site, finding conversations, and composing messages. This Facebook Cheat Sheet offers up all the shortcuts plus a guide to emoticons.