UMLet is an open-source UML tool with a simple user interface: draw UML diagrams fast, export diagrams to eps, pdf, jpg, svg, and clipboard, share diagrams using Eclipse, and create new, custom UML elements.

Much like Firefox, GIMP’s strength lies in its plugins, which are developed by the open-source toting community. Since the users themselves develop them, they know all the needs and conceive a plugin for everything.

Seems to have it themed. Flags, Browsing, etc.

"The IconsExtract utility scans the files and folders on your computer, and extract the icons and cursors stored in EXE, DLL, OCX, CPL, and in other file types. You can save the extracted icons to ICO files (or CUR files for cursors), or copy the image of a single icon into the clipboard."

An image browser, converter and editor that supports all major graphic formats including BMP, JPEG, JPEG 2000, GIF, PNG, PCX, TIFF, WMF, ICO, TGA and camera raw files. It has a nice array of features such as image viewing, management, comparison, red-eye removal, emailing, resizing, cropping, color adjustments, musical slideshow and much more.

"This Screen Ruler is a great tool that allows you to accurately measure anything on your screen. This is especially useful when measuring graphics, web page browser sizes or whatever. Screen Ruler can display Pixels, Inches, Picas or Centimeters. "

"TimeSnapper runs in the background of your computer, taking screenshots of your desktop every few seconds all week long."

A generator for Kentekens, it includes the sourcecode in PHP.

A Dutch car license generator.

"Enter an RGB or HEX value, or click on the Color Palette below"

You can select an image and take out the various colours used in the image.

"To get started, choose a preferred color using the color picker below, and a 6-color matching palette (a "blend") will be automatically calculated."

Open source silk icons at famfamfam.com

from managed directx to xna