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.
racketeer racketier rocketeer rocketer ricketier rocketry reactor raggeder requiter raggedier rector rectory rogatory ruggeder
racketeer rocketeer picketer pocketer racketier ricketier rocketer skeeter
racket rackety racked rickety rocket wracked bracket cracked tracked