Windows only: Tiny open-source application Lightscreen takes screenshots with a configurable hotkey and automatically saves them into a folder of your choice. Lightscreen is a simple application designed to do nothing more than take screenshots, which are saved with a choice of JPG, BMP or PNG format to auto-numbered filenames and copied to the clipboard. Lightscreen has no built-in editing or annotation tools, leaving any editing tasks to separate applications like Paint.NET. If all you want is screen capture directly to a file, this utility might be worth a look. Windows Vista users will need to right-click on the setup application and choose "Run as Administrator" if installing to the Program Files folder. Lightscreen is a free download for Windows users. Thanks Paul!