WinSnap for Windows

WinSnap can be used to take and edit screenshots. Standard features include the ability to capture non-rectangular windows with transparent backgrounds and customized backgrounds, as well as simple and automatic canvas transformations, coloring effects and the addition eye-candy drops shadows. WinSnap supports many image formats and has advanced autosave features.

Non-rectangular shapes, rounded Drop shadow effect, Windows Vista supportAlpha Channel and PNG transparency supportUnique multi-object capture mode

Version 1 is free for personal, educational, and non-commercial purposes. Version 2 and beyond is shareware.