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.
puts putts pouts pats pets putz puds pits pots putties puttees peats pates patsy poets pitas potsy pottos patois pietas pittas pities potsie pitsaw petsai poetise piteous patties poetess potties pieties pads paduasoy peds pods padis pedes poods
beauts gouts shouts tuts tauts ruts puts outs nuts knouts muts mauts louts guts cuts bouts juts huts phuts ghauts buts pouts routs dauts touts uts shuts
put putt puttee putti puttie putto putty