Lightscreen is a small tool to automate the tedious process of saving and cataloging screenshots, it operates as a hidden background process that is invoked with one (or multiple) hotkeys and then saves a screenshot file to disk according to the user's preferences.

New version: 0.4
(check the download page)

Below is a list of Lightscreen's main features:

Additional information such as a bug and suggestion tracker can be found at Lightscreen's SourceForge project page.