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