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.
dormouse dorms dormice dioramas derms drams drums dreams durums dermis dramas dirams dermas dayrooms terms trams trims
rearmouse dormouse shrewmouse reremouse cormous charmeuse grumous grumose corymbous corymbose brumous biramose rimous rimose ramous ramose chromous biramous