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.
bitts bits baits bitsy butts batts botts bites buttes biotas bettas boites buts battues bats bids bets butties bots bates bidis bouts betas beats beets butes botas boats bytes bides bahts boots bodies buteos beauts betise boodies beedies bawdies buddies booties bawties bootees baddies biddies beauties bads beds bods buds beauteous
mitts bitts its zitis lottes litas lyttas pottos mottes botts bettas batts aits ottos bites writes bits quiets quoits mitis suits baits matts gits situs rites bitsy tots shotts chotts dattos wits whits knits watts tuttis dits tits motts fits duits tets nites dittos sites ditas pits raitas cites kites cottas pitas rottes kits doits writs dites tuts coitus titis chits setts nits quits boites suites sits gaits mutts butts riots fiats zits fouettes whites putts gites mites mattes lottos lits lattes pittas mottos netts ghettos shits buttes hits fyttes suttas diets ditsy tats toits waits wites yetts
bitty bitt bit butty bait batt batteau battu battue batty betta bite boite bott butt butte biota obit