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.
pitsaw pits pitas pities pittas petsai pietas pieties piteous pots puts pats pets poets potsy patsy pouts peats pates padis putts potsie pottos patois paddies patties poetess poetise potties puttees putties
outsaw pitsaw taws matsah outsay petsai
pit pieta piety pita pitta pity spit spite