OneLook wildcard searchable set of Dictionaries

Source: OneLook

The user can search for words using wildcards such as * where for instance you could look for all words that end in 'droid' by typing '*droid' into the search box.  This could be helpful when brainstorming for a cool sounding domain name.  [destroid.net cough cough]

Kuler - Adobe

Source: kuler

Color selection at its finest.  Users can create multiple colors saved as themes.  The tools are very well organized and useful when you are trying to finish up a web designs or to create a set of seamless colors and an app.