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.
swede sawed sewed sowed sweet seaweed sweetie sweat sweaty swat swot
swede wed gnawed miaowed meowed lawed cawed mawed viewed jewed jowed jawed hewed sawed sewed vowed bowwowed dawed dowed tewed tweed weeweed chawed chowed shewed yawed hawed pawed mayweed mowed rewed seaweed sowed bowed awed wide weed weet rowed cowed wade mewed lowed owed powwowed sweet dewed tawed towed tweet wowed chewed shawed showed yowed