WriteRhymes is a handy little resource for any aspiring poet - or anyone who like to annoy their co-workers by needlessly speaking in rhymes. Type some text in the box, alt + click a word, and suggested rhymes appear in a balloon. They're even grouped by syllable count for easy integration into your poetic rhythm.
You can even print, copy, and save your literary works via three handy buttons below the text box. Neato!
We did try, but sadly there are still no words that rhyme with orange or purple. Or verisimilitude, for that matter.
One tip. After alt+clicking wait for some time for the results to be displayed in a balloon.