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.
stay satay sty stoa stey seta staw sutta stoai setae sooty suety stewy stoae sayyid sad sit set sat sot stow zeta said sadi sett sate site sade city soda soot seat suet stew suit sati saute seedy soddy suite zooty