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.
calesas calces coalesces calices calyces calloses calluses coleuses callouses colessees clozes colzas closes classes clauses culices glossas classis colossus cullises galluses coulisses gallowses galleasses galliasses glaces glazes glozes glasses glosses
calesas leses balsas phyleses phylesis salsas teleses telesis
calesa callees calls calos caules cauls clews clues coalesce coals coles colessee gales kales scales