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.
resaws resows resays resews reseaus reuses resees recess reassess reissues ruses roses rases razes races rises risus rices raises razees razzes resize rooses rouses hyraces reseize rosacea wrasses
saws seesaws resaws mesas assais masas quassias cassias casas visas fossas essays assays bioassays nauseas resews seas sews says lyssas massas missays naysays psoas sows paisas resays resows seesaw sass tussahs
resay resaw res ores tress dressy reraise rearouse prese grease rees resee reis reissue reseau cress ureas ursa crease resew resow rears press tressy tres creasy dress reuse roes ares urease ires presa areas greasy rues cressy ursae