I adopted Gadwin PrintScreen. It's a closed-source freeware, but I yet have to find a matching open-source offering together the features that I required:
- substitute to the PrintScreen key
- ability to save automatically a region screenshot in clipboard as well as file without prompt.
- delayed capture
- ability to capture the mouse pointer
- jpeg support
- automatic naming
- lightweight (3.5 MB)
- fast to load and run
Open-Source alternative:
Greenshot (no delayed capture and pointer capture in v0.7, but does everything else!)
Screen Recording
At times, I need to produce a screen recording video as a software bug evidence for instance, or as a tutorial complement. The open-source CamStudio gives a very complete set of features to produce video recording in AVI of Flash along with captions and audio comment if needed.