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.
suits suites sits suets sites situs suttas sautes suds zits sots sets suttees stoas sudsy satis sadis cites stows sates zitis saids soots stoss setts sides stews stays sties seats sudds setose suedes setous cities satays sayyids settees soddies sods
suits duits quits uts its tuis mites gaits kites quoits utas beauts baits ditas huts nuts lutes coitus zits bits phuts dites juts butes cutis gites raitas pits guids gutsy ghauts aits toits shutes shits outs chits wites lits whites writes mitts tuts titis zitis routs rites dits mitis nites dauts suites puts kits doits situs knits gits bitsy quids butts nutsy bitts etuis guts autos pouts muts fits buts riots ditsy knouts litas pitas quiets gouts mutts jutes bouts boites cutes fiats bites sites cites writs routes ruts nits sautes mutes cuts louts mauts diets putts hits tauts duets tits sits touts tutus suets utes waits whits wits chutes shouts shuts
suite suit sit saute site suet suety sutta suttee suicide