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.
bots boats bouts boots botas botts boites biotas buts bits bats bods bets booties bootees baits betas batts butts butes beets bodes bates bitts bitsy bytes bites bahts beats betise buteos buttes beauts bodies bettas bawties butties boodies battues buds beds bads bids beauties beauteous bauds bawds beads bides bidis
boots cots shoots tots dots soots roots pots oots knots mots moots lots loots coots bots jots hots hoots phots foots riots rots sots toots wots shots