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.
proms promos proems promise perms prims prams promisee primes primus primas primos praams primsie paramos premise premiss premies permease preemies hyperemias primacy
roms caroms carroms proms crams forams dayrooms bermes barms dermis berms dirams norms bromos charms herms formes durums quorums grams karmas brims prams chromos barrooms warms teraohms drams serums ferrums farms proems chromas varooms aurums kermis harems germs vermis jorums forms vermes trams terms harms grooms rooms roams arums drums rims promos worms vrooms rums derms rearms ihrams brooms forums zirams fermis arms aromas chromes dermas gorms firms prims perms neuromas larums kormas bromes kermes corms chirms rams jorams rems marrams dorms tearooms trims showrooms
promo prom perm pram premie prim prima prime primi primo proem