You could have downloaded CaptureStuff 1.00 from our software library for free. CaptureStuff lies within Photo & Graphics Tools, more precisely Screen Capture. The actual developer of the software is Basta Computing, Inc.
From the developer:
CaptureStuff is an integrated collection of tools designed to speed up your creative work. It includes the following components.
A screen copier to capture windows, window parts, display monitors, and areas in multiple shapes including freehand, with transparency support. You can then paste captured elements into other applications or export them to files in multiple formats.
You may want to check out more software, such as #1 Screen Capture or WWW2Image, which might be similar to CaptureStuff.