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.
sudds suds sudsy suedes sods soddies sadis suits suets sades saids sodas sides seeds situs sautes setous suites suttas sayyids suttees sets sits sots zeds
rudds sudds kiddos kudos kudus quids lauds leuds guids nudes mauds readds caddis gauds redds suds dads dudes udos ouds gudes gaddis quads bauds adds judos judas fuds feuds puds buds quods leudes ludes muds odds cuds sudsy duads duds yauds