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.
comes combes coombes commies cames comas combs comous comose coombs commas combos cameos cwms cammies caeomas cams camas kames games camos gambes koumys gombos koumis camise camisa camass kombus cumbias koumiss koumyss goombahs goombays gams gums
biomes comes gnomes tomes pomes nomes homes domes momes oms looms kames mesa homeys ohms lames gimmies combs immies mammees limeys homos rimes games mamboes gambes jambes nomas dames mews rummies hemes mamies semes nomos roomies moms poms cames dooms siamese shimmies shammes chymes chammies whomso wames toms cameos times tames dummies names bombs zooms demies mimeos jemmies somas mess limes ramies romeos momus amies mems mummies hames poems commies mammies coombs combes roms booms jimmies roams fumes smews ramees mammeys mameys foams mimes maes comas memes emeus homies mommies moues gimmes heaumes jammies noms dimes caeomas pommies emes fames cymes cammies coombes bimboes loams neumes rhymes femes bombes rooms demes pomos soms femmes doms zymes doums duomos tammies tombs tommies tummies whammies wombs chimes shames shammies shmoes yummies
come came cameo coma comae comb combe combo comma commie commy coomb coombe acme