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.
choral chorale choreal chorial chorally chiral churl shorl charily charley charlie cheerly cheerily shrill sheerly shrilly
boral moral choral gooral goral loral oral coral horal rail trial derail trail orle neural serial graal craal ceorl narial zoarial urial seral corral brail rural drawl cereal sorel surreal zoril drail dural trawl whorl chorale chiral chorial jural rale rial burial poorly real sural gharial kraal oorali irreal aural areal gyral aerial serail loreal ureal parral feral frail curial morale crawl brawl ferial boreal morel viral grail woorali choreal mural shorl
chore chorea ochreae ochre echoer churro churr choir chiru chirre chirr chiro cherry chary charry charro charr chare char shore ichor ochrea ochry