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.
botas biotas bots boots botts boats betas bouts bettas boites booties buts bets bits bootees bats bods bads bodes butes baits butts bates bawds beets beats bites bitsy bitts bahts bytes beads batts bauds bodies beauts buttes betise buteos badass bawdies battues boodies butties baddies bawties beauties beds bids buds beauteous
biotas quotas jotas iotas botas rotas lotas tas taos getas hots photos mots quoits louts knouts gouts boots pietas votes poets botts motes phots hoots lotahs sots lots rotes footsy mutase rotos bettas cots riots sodas dotes shotts shotes shoats chotts cheetahs woads touts totes toots toads tads zetas oots doats pouts stoas tass coats routs knots notes reatas taus lotos oats pots potsy boats roots toeas rotis bouts lotus kotos pitas soots loots bots outs betas etas teas taws katas coots codas motts jots cottas pittas goads loads litas quotes moots satays lyttas ditas raitas moats foots roads nowts odas rots cotes goats stays riatas fetas doits suttas dots tats toits tootsy tots utas wots chetahs shittahs shoots shots shouts
bota bot beta biota boat boite boot bootee bootie booty bott bout