DriveSort is a free and portable files sorting applet, which can quickly find out the biggest or latest files from the whole piece of hard drive.
Windows built-in Explorer, because of combination with browser and some fancy functions, sometimes its open-speed may be very slow, at this time you can try Mini Explorer (ME2 for short), this fast and lightweight Windows Explorer alternative.
SpeQ is a professional senior mathematics calculation application, very small (only about 500 kb) and powerful, is voted the 5-Star maths calculator by many famous download sites.
You may have used some file/folder marking applications like iColorFolder and Folder Colorizer, which achieve the classification by changing color of file/folder, or flag which one is important. Another similar software to be introduced to everybody, Shedko Badges, yet it is very unusual!
Extreme Units Converter is one five-star applet, it is mainly used to perform the conversion among the most widely used units in Physics, Math, Chemistry and some other fields, and gives the most accurate results.
Software’s size and function are growing with each passing day, yet those small ones are always welcome by users. Foxit Reader and PDF-XChange Viewer have taken over the market of the bulky Adobe Reader at one time, but they also gradually lost the original lightsome look in the process of commercialization. In this trend, only SumatraPDF is still faithful to its original faith!