HoverSnap is a a free handy snapshot tool with jpg, png, bmp and gif support.

HoverSnap can take snapshots of the full screen, active window or a selected area. It can even capture layered windows (alphablended ones under 2K / XP). You can even FTP upload your screenshots.

You can set up the capture folder / filename and format.
You can reduce the capture size. Auto-generate filename option will add the time stamp (date/time) to your filename in order to be able to take several captures without having to change the filename. Optional sound when capture is done.

HoverSnap is FREE for personal use only.