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.
botts bots boots bouts botas batts butts boats bitts bettas buttes biotas boites booties bootees bits bods bats buts butties battues bets bahts beets betas bodes bates beats baits butes bytes bitsy bites buteos betise beauts bodies bawties boodies beauties bads beds bids buds beauteous
botts shotts motts chotts lotos quotas mottes lyttas doits moats votes lottes gouts jotas nowts footsy pouts loots suttas cottas watts foots oots quotes quoits knots cotes coats outs lots shouts botas netts shots poets dittos tots tootsy soots toits tets potsy dots fouettes shoots riots tuts lotus bouts routs fyttes rotis rots motes rotas photos bots rotes buttes roots batts dotes oats butts ghettos phots louts kotos lottos knouts coots rotos toots boots mattes boats iotas moots ottos mottos notes matts bitts goats cots lattes hots bettas jots mutts rottes biotas sots putts pittas mitts pottos hoots tats setts shotes mots tits totes dattos touts tuttis doats wots pots lotas shoats yetts
bott bot butte bout booty bootie bootee boot boite boat bitt bitty biota betta batty battue battu batteau bota batt butt butty