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.
vetoer vetter voter fetor fetter foetor viator feater voider votary fatter fedora feeder fitter fodder footer faitour fattier feature feodary footier phatter
vetoer tor bittier tour battier biter nattier heater toro jotter cotter hootier battery coder meteor cutter batter baiter footier hitter fatter poutier better auteur motor jitter gutter torr hater guttier goiter neuter rattier rioter nuttier mutter otter knottier getter metier matter later lotter fetter haughtier tory couter quittor cautery feater cattery foetor eatery viator letter knitter mater peatier touter rater titer writer doughtier totter tattooer noter tutor utter pater rotor watter water wheatear whiter detour whitter chatter chattier chitter zootier sheeter shooter shutter router tatter doter satori nitery seater litter teeter tooter quieter retore sitter stere dotter pottier souter petter suiter gater potter meatier daughter mitier story netter loiter pewter putter rooter beater bootery quoter gator nettier ratter reutter nutter muter oater knotter hotter meter matier looter voter faitour hatter fattier cottier quitter cattier tore cater tori footer vetter guttery tora gnattier coater buttery tier tear butter natter hauteur phatter jittery cooter hooter boater meeter goutier cuter bettor bitter fetor hetero fitter pouter doer eater mooter jettier latter lottery ritter sootier niter sautoir liter tauter titter kiter retear setter steer dotier pottery peter dieter stour gaiter pitier mattery dater miter store neater littery pettier powter citer tater patter rootier tottery puttier tetter ruttier dottier toter tattier nittier tuatera uteri outer watery rotter waiter wetter whetter deter whitier wittier chattery cheater suitor shatter shittier shouter yatter