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.
ageist agist
hygeist ageist hygieist dodgiest sedgiest sagest pudgiest majesty legist cagiest geest gest geste gist jest joist agist ledgiest egest logiest egesta podgiest hedgiest ridgiest hugest sagiest jujuist digest edgiest wedgiest