
Linux only: Want the look and feel of a Mac without paying the high-end design premium? Tired of hearing from all your Mac-happy friends how awesome Leopard looks? Got time to run through six pages of instructions? Then HowTo Forge has got you covered. Their guide to making a nearly total theme conversion requires Compiz Fusion (installed by default on Ubuntu Gutsy Gibbon), Awn and the patience to download and place a hefty handful of files, but everything seems to be covered, right down to the system sounds. The guide is written for GNOME-based Linux systems and requires a number of downloads, some of which might not pass the most stringent legal (or open source) tests but are otherwise free. I haven’t tried it myself, but this weekend’s another story.
Windows only: Freeware application AutoSizer automatically resizes and moves application windows to specific, user-defined sizes and screen locations as soon as they’re opened. That means that if you’ve got a widescreen monitor with the perfect window layout that packs every last pixel with useful information, you can save each window size and location with AutoSizer and restore the perfect layout automatically, day after day, as soon as you launch the applications. Alternately, if you’d prefer an application to open maximized or minimized, AutoSizer can take care of that, too. AutoSizer is freeware, Windows only. For similar but manual takes on screen real estate maximization, check out 
