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.
trawl trawley drawl trail trial drawly tirl drail trull triol dural trill troll truly derail torula trolly tearily torulae trolley terrella dirl
brawl drawl trawl crawl choral oorali ureal areal narial kraal real rawly jural rale frail viral irreal curial boreal graal choreal rial morale brawly parral rural serail serial surreal derail goral aural boral dural grail woorali rail feral trial drawly urial trail gooral loreal aerial crawly ferial gharial horal gyral burial coral craal chorale growl chiral brail corral loral moral mural neural oral prowl cereal seral sural zoarial drail chorial
draw terai tora torah tray trow straw strawy stray tawdry