I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
corridor cowriter corduroy carrotier corder crittur gridder critter courter criteria garroter courtier carder carter crater cruder curter
corridor rider ardor ardour arider heritor horrider joyrider lowrider mirador parador sordor derider torrider
corrida carried corrade corrode corrody cowrite curried