AKVIS SmartMask plug-in is an efficient selection tool. There are two pencils: blue and red. You draw a line with the blue pencil inside the object you want to select, and with the red pencil some lines outside the object to define the areas that should be cut out. The plugin offers three modes: Sharp, Soft, and Complex.
HTCFlasher (formerly known as HERMflasher) is a tool which allows you to flash ROMs on most current HTC devices. It has some extra features that the original HTC RUU doesn't have. For example, it can present a serial prompt to the bootloader (replacing mtty), or it can dump NBH file contents (.nb ROM parts).
PylotLight is a cross-platform, themeable, plugin-supporting system for general computing tasks. It is comparable to QuickSilver, which you may recognize if you use a Mac. Current plugins exist for Web searches, Firefox bookmark launching, filesystem browsing and managing, subversion control, terminal control, and more.
JImageView an image viewer with no extra features. It is essentially an image display plus a menu-bar which includes the following actions: Rotate (Clockwise, Counter Clockwise, Rotate Normal); Scale (Zoom In, Zoom Out, Zoom to fit, Zoom Normal); Mirror (Flip Horizontally, Flip Vertically, Flip Normal); Fullscreen display; Slideshow mode; and Print.