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.
rialto realty rillet reality reallot relet relit riled railed relate rilled roiled rallied reoiled rollout roulette
alto rialto alt chalot dealt sault salt palet mulatto molto malty malt lealty gelato halt alit realty gault vault salty valet zealot fealty chalet fault shalt
rial riel trill drily prill oral grille frilly brillo aril roily roil rille rill riley rile really rail realia real rawly rally rale brill frill grill krill orally drill trial urial