Anki is a friendly, intelligent spaced (word card) learning system based on the Spaced Repetition theory. It's free and open source, with which you can remember anything, anywhere and efficiently.

TimerQ function is so simple, but practical enough, and after all, it's such lightweight (only 72 KB after decompression), isn't it? You don't need to install, after running TimerQ automatically hides itself into the system tray, by right-clicking the icon you can choose the preset time to countdown.

Two Notes is a desktop sticky notes application appear on your screen in the form of an intelligent small window, built-in multiple templates, also allows to custom your own templates. It gave me a good impression, small and exquisite, with 456 KB size and acceptable memory usage, only about 1032 K.

NextAction is a simple and fun GTD application to keep you focused, remind you what to do next on and on. It's always on top, always out of the way, and saves automatically.

Atmosphere Deluxe is a very outstanding, award-winning desktop application, which can bring the wonderful melody of nature to your computer desktop (perfectly reproduces all kinds of voices in the nature), allows you to listen and feel the nature remaining within doors.