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.
detail dedal dotal daedal deadly dottily tattily total tidal doughtily diddly dottel tattle tautly tidily dowdily tidally totally
tail retail cattail coattail detail rattail til ratal dotal steal fetal knottily till still setal retile wittily doughtily motile total nattily notal petal tile ritual ruttily sootily stall stile stale vital fattily cattalo cattily chital coital chattily metal pettily catalo nautili tattily toil tall goutily meatily futile tale mutual daily dottily utile chaetal natal meatal rutile teal nuttily luteal tael fatal tala tali haughtily hiatal foetal hyetal
data dead deet deity diet dita duet ideate metate dieted dueted duetted