WinSnap - makes screenshots better!
WinSnap Portable Edition - NEW!!!
It is a special edition of WinSnap designed to run it from a removable media (USB flash drive, iPod/MP3 player, network share, etc). Simply extract the content of one of the following archives:

WinSnap Portable Edition (142 KB)
WinSnap Portable Edition with GDI+ (1 MB) *
* download this version if you will run WinSnap on Windows 2000 (not required for XP)
** for more information read What is WinSnap Portable Edition?

More Info & Download at: ntwind Software

WinSnap 3.0.4

Changes

WinSnap 3.0 Portable and U3 Editions released
Added support of third-party language files and translations
Added option "Show prompt dialog before exit if image is not saved"
Added a reminder dialog in the unregistered version
Fixed F1 and "Help Topics" link in the main menu
Some minor enhancements in the user interface
Some default settings were changed

http://www.ntwind.com/software/winsnap/download.html