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.
stulls stills stalls stellas setulous setulose steals sotols stiles styles stylus stools steels stoles steles stales stylise settles sedulous stoolies steelies seatless sidles cedulas saddles seidels stylize cedillas seedless sodaless
dulls stulls tuilles mutuels atolls dells dills tolls doulas duals dolls duellos patellas fauteuils modulus retells medullas cedillas caudillos stalls idylls stills tules nodules tulles outtells tellys tells tills tallis tailles talls mutuals mutules modules dulse radulas latillas rituals cadelles cedulas vitellus stellas bedells duels dalles
stull stale stall stela stelae stelai stele stella stile still stilly stole style styli istle