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.
bitsy bits bitts bites baits boites biotas bids buts bets bots bats bates butes bouts butts boots beets bides betas botts boats batts bytes bahts botas beats bidis betise bodies buteos beauts buttes bettas booties battues bawties biddies bootees beedies boodies bawdies baddies butties buddies beauties bads beds bods buds beauteous
bitsy ditsy its tootsy whites duits tits footsy ditzy bits mitis hits gites gits coitus gaits fits kites quoits chits wites lits knits outsay pitas potsy riots ritzy quiets sites situs suits zits ditas dits writs fiats nits bites gutsy raitas mitts litas quits kits mites bitts daisy aits baits patsy nutsy rites writes pits boites wits whits waits toits titis doits nites cutesy dites diets zitis suites sits cites shits
bit bait biota bite bitt bitty boite obit