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.
quaaludes qualities quillets colludes culets glades glides gledes quilts guilds glutes cultus clouds caulds clades gallets gluteus callets cullets gullets galletas galateas galettes killdees gallates culottes collides calottes clods colds cults glads gleds gluts golds clads
quaaludes ludes leudes alludes baldies eludes halides illudes colludes salutes deludes toluides