Tuxman, I don't understand your reply. Could you elaborate?
1) There is no application which is actually "based" on Linux...
Linux is a kernel. It could be hard to even imagine how an application should be based on it.
2) For most apps there already is a great Linux alternative.
import command perfectly does everything you can expect from a screenshotting app...
Direct reply to the OP's request (Screenshot Captor). On Linux I take screenshots via import
, it allows a wide variety of parameters and is usually a part of your distribution anyway.