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.
troutier trotter tartier tarter triter treater tardier dirtier torrider trattorie tartar trader treader tartare tireder torture traitor toreador trattoria darter
groutier troutier chertier rattier partier frettier grottier curter rootier router ruttier artier brattier bruiter reutter prettier heartier fruiter hurter carrotier courter courtier grittier grouter quartier portiere purtier tartier fruitier dirtier wartier shirtier
trout trouty trot tarot torot stroud strut