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.
stretta strette stretto stretti street strata striata sturt start strut stored stared strait strode strati stride stirred steered sutured striate storied starred stereoed stearate seatrout saturate stroud sturdy citrate satyrid steroid
stretta featurette strette stretti stretto
stare stere stereo store storey strew