Nooklets is an application that creates a container to run HTML/Javascript apps (called nooklets.) The sample set of nooklets includes a Sudoku game, and writing your own nooklet is as easy as creating a couple of html files and copying it to your internal SD card
aHome is a home replacement application for Android-based devices. You can download and customize multiple home themes, wallpapers and widgets for your Android home. In addition, it extends your home functions by including features such as two bar styles, customized screen counts, and automatic wallpaper changes. aHome will make your Android life fresh every day
Swapper - Simple application for "extending memory". Helps when you need some memory for non active applications (like music player + browser + maps + etc...).
Warning: SD card will be used as swap space. It can (and will) shorten SD card lifespan.
Application creates/rewrites swapfile.swp file on sdcard and mounts it as swap