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.
stow stew staw stoa stoai stoae stewy sod sat sit sot sty set seta site soda sate sett suet sati stay seat soot suit stey satay saute setae soddy sooty suety suite sutta