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.
sapotas sapotes spots spouts spats spits septs spodes spites spates spaits sippets sopites speedos zapateos zaptiehs spitz spuds spades speeds
sapotas pots dioptase pitas poets potsy pouts boughpots bowpots copouts capotes nepetas repots sapotes spots spouts depots teapots
sapota sapote spot spotty spout