Screenshot tool for Gnome
Desktop Data Manager is superb tool; providing a clipboard manager, a screenshot taking app that allows you to select regions and a reasonable download manager. I mainly use the screenshot tool at the moment.
From their page:
Clipboard Manager
Clipboard history for a customized number of entries
Separate list for CLIPBOARD (Ctrl+C/Ctrl+V) and PRIMARY (Middle Mouse Button)
Displays text and images inline
Converts HTML/FTP/… links (in fact any link that is supported through GnomeVFS) to images which can be pasted into any application
Images can be pasted as a new file by simply using Ctrl+V
Customizable keyboard shortcuts
Extensible through plugins
Screenshot-Taking Applications
Take screenshots of single window, single subwindow, selected rectangle or the whole desktop
Seamless operation with the clipboard manager
** Download Manager**
Continuation (Pause and Continue downloads)
Threaded/Segmented downloading
HTTP/HTTPS/FTP protocol support
MD5/SHA1 checksum calculation
Downloading from multiple mirrors
What sets DDM apart from Klipper/Glipper/…
Inline display of images
“Creators” enable Copy and Paste for files and their content in both direction (see screenshots page for details)
Screenshot-Taking Application enables copy of mages out of e.g. a PDF files directly into any other application or in a file