ScreenHunter 4.0 Free

Macht Schnappschüsse vom Monitorbild , Größe des Ausschnitts mittels Mauszeiger frei wählbar.
speichert das Ergebnis als BMP,JPEG oder GIF
englisch

http://wisdom-soft.com/products/screenhunter.htm

Ebenfalls bei WISDOM gibt es den AutoScreenRecorder :

What is the difference between AutoScreenRecorder and ScreenHunter?

AutoScreenRecorder is for recording screen activities, such as screen changes, mouse clicks, menu operations or streaming online movies, and saving them into a video file, either in Flash movie or AVI format. The saved video file is played back by a Media Player, or browser.

ScreenHunter is for taking still screenshots. It takes a part of the screen and saves it to an image file, such as BMP, JPEG or GIF.