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.
proems proms promos premiss premies premise perms prams prims preemies primas primos primes primus praams hyperemias paramos primsie promise permease promisee primacy
proems biremes germs varooms forms vrooms bromos bromes brooms berms dayrooms norms proms dorms grooms tearooms cremes terms cramboes chromas carroms chromos harems breams reams seriemas herms caroms roams roms hareems aromas barrooms rooms promos derms rems perms dreams neuromas teraohms gorms worms creams chromes corms showrooms
proem preemie premie prom promo