Submit portable freeware that you find here. It helps if you include information like description, extraction instruction, Unicode support, whether it writes to the registry, and so on.
Catcher is a simple application which takes single and sequential screenshots. It provides also a useful feature to capture only a window over the mouse cursor.
A nice addition to the small set of screenshot programs that don’t have dotNET dependencies and the tabbed view is a nice addition over similar tools. The license appears to be freeware (the author has open source tools but this isn’t one of them).
EDIT: note that the program saves "sequences" to the application folder. They don't show up in the tabbed view.