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.
roman romano romaine reman remain ramen rumen ramona rumina
roman yeoman toman woman soman man bemoan layman many mano mane mana cowman gnomon mean main leman nomen seaman human bayman demean women shaman mawn moan liman lawman immane bowman foeman humane jomon cayman daman caiman omen reman maun amain remain romano simian domain bemean womyn showman yeomen
rom roam romeo room roomie roomy aroma brome bromo from prom promo