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.
kormas karmas corms gorms kermes gramas kermis kermess grammas quorums cormous corymbs kirmess kermesse gouramis grams crams corymbous corymbose gouramies grooms cremes crumbs grimes caroms crimes grumes creams carroms crambes curiums grammes grimace crummies gremmies
karmas kormas dermas berms neuromas caroms harms corms forms derms dirams forums hyperemias uremias ihrams grammas drums farms bermes barms aurums trams chirms quorums trims taramas dramas forams viremias rems vermes worms kermis marimbas brims prams prims rearms serums gorms ferrums brahmas formes gramas dermis germs carroms roms arms grams harems firms fermis dorms herms rims drams jorams crams zirams kermes rumbas seriemas jorums proms perms rums norms dioramas arums larums primas vermis rams terms marrams traumas uraemias aromas warms charms durums chromas