Transfz

Transfz - Powerful Systemwide Search for Windows:

"Quickly launch a lookup in any online search engine or dictionary through the Global Menu. Searches can be performed from all applications - you are no longer bound to the browser. Assign hotkeys directly to search engines so that one key press can look up a term directly online quicker than ever before. Extend the clipboard; insert text by selecting among the last 5-30 entries of copied text, an immense time saver for professional/power users."