Liquid Desktop
Awesome 3D liquid melting takes over a screen shot of your desktop. This screen saver liquefies your desktop by running waves through it while simultaneously tweaking the color intensity of each ripple, resulting in a mesmerizing and soothing feeling. ... Use the chrome effects to render a metallic mirror surface.
http://isotope244.swmirror.com/Liquid-Desktop.exe - 1Mb - Download - Screenshot

Zilla WinCleaner N' Optimizer
Zilla WinCleaner N' Optimizer is like having your own personal cleaning company for your Windows® computer. Like a professional cleaner, the program knows exactly what kind of dirt to look for, where to find it & how to get rid of it efficiently & without damaging anything else on your PC. ... Note: This is an advanced shredder, with multiple algorithms,so be aware before you use this feature with Data Nuker, Choose which files are associated with which program. ... Quick, easy and whenever you want with File Associator.
http://www.ZillaSoft.ws/download/zwco2611.exe - 11Mb - Download - Screenshot

Systerac XP Tools
Systerac XP Tools present 17 valuable tools that help you tweak your windows xp for optimum performance. With the touch of a button you will be able to immediately identify any problems and weak points and correct them with the safety that only Systerac can guarrantee. ... The PC diagnostics that are included in the tools provide you with all the necessary information that you may need in case of any problems and solve your PC troubles in no time. ... Install Systerac XP Tools in your PC now and enjoy the safest and most optimal performance in your Windows XP.
http://dl.filekicker.com/send/file/157033-2T11/SXT3.exe - 12Mb - Download - Screenshot

1 Privacy Eraser
1 Privacy Cleaner is the no. 1 privacy protection tool on the Web! With features such as: rapid erase, configurable hotkeys, configurable options, scheduler, plugins, junk cleaner, memory optimizer, space cleaner, file shredder, Windows tweaking and browser cleaning, 1 Privacy Cleaner makes sure...
http://1privacy.net/downloads/1privacy25.exe - 1Mb - Download - Screenshot

98/ME Smoker
98/ME Smoker is a Windows 98 and Windows ME tweaking utility that will help to reduce system bottlenecks, decrease boot times and increase system stability. In addition 98/ME Smoker has a new State-Of-The-Art internet optimizer that will tune any internet connection to perfection. ... Get it, or stay slow! ... Boost your dialup, cable, dsl, satellite, etc.
http://xp-smoker.com/downloads/98smoker.exe - 4Mb - Download - Screenshot

Aargon BlackBox
A game of logic and deduction based on optics and lasers. Fire lasers into a black box and watch the outgoing clues to figure out what's hidden inside. The black box contains mirrors, prisms, splitters and other laser tweaking tools. Color also plays a part as filters and prisms split and merge... Great graphics and sound, and many clever puzzles as well as random puzzles and more.
http://www.twilightgames.com/download/blackbox10.exe - 6Mb - Download - Screenshot

SuperGIF for Macintosh
SuperGIF effortlessly makes all your GIF images and animations smaller with a single Drag & Drop. Try it for yourself. SuperGIF can often reduce GIF images over 50%, and does even better with GIF animations, with potential savings over 80%. Statistics don't say much about what any tool can do... Even after you have labored hours tweaking on them and think you have the smallest file possible, nearly every time, SuperGIF will make them even smaller still, without any extra effort. ... SuperGIF ensures that you have the very smallest GIFs possible.
http://www.boxtopsoft.com/download/Macintosh/SuperGIF1.5.2.sit.hqx - 790Kb - Download - Screenshot

SuperGIF for Windows
SuperGIF effortlessly makes all your GIF images and animations smaller with a single Drag & Drop. Try it for yourself. SuperGIF can often reduce GIF images over 50%, and does even better with GIF animations, with potential savings over 80%. Statistics don't say much about what any tool can do... Even after you have labored hours tweaking on them and think you have the smallest file possible, nearly every time, SuperGIF will make them even smaller still, without any extra effort. ... SuperGIF ensures that you have the very smallest GIFs possible.
http://www.boxtopsoft.com/download/Windows/SuperGIF15.zip - 131Kb - Download - Screenshot

Magic Registry
Magic Registry is a special Tweaking Tool designed to optimize and personalize Windows Me/9X (95/98/98 SE) looks , feels and performance. Magic Registry makes it easy to change the hundreds hidding settings in Windows so there is no longer any need to go digging in the registry manually, from... Maybe you have no experience in Windows registry,but you can be a expert after you begin to use this software right now.
http://www.efreesky.com/download/mgreg.zip - 397Kb - Download - Screenshot

Optimum XP
Tweak Windows XP with Optimum XP! It makes it so easy to accelerate, secure and totally customize your Windows XP Home or Pro system with over 150 powerful tweaks and hidden Registry settings. The easy-to-use interface has descriptions right next to each tweak. ... It uses minimal system resources and is very user friendly. ... The included features will: increase CPU priority, free up RAM, optimize hard drive space, accelerate file system performance, accelerate Internet speed, increase security and privacy, help prevent Denial of Service attacks, enhance network communications,...
http://www.roemersoftware.com/downld1/optimumxp.exe - 961Kb - Download - Screenshot