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.
triols trolls trills trails trials troilus tirls trollies darioles trolleys drolls trailless drools drills trawls trulls drails trellis torulas derails treeless tireless tearless trawleys dirls hydrillas hydrolase terrellas drawls doorless
triols paroles grills roils riles carioles carolus virls drails payrolls reoils roles frills broils prowls prills pyrroles derails nerolis rerolls rolls shorls trolls serails brails zorils rills aerials rials whirls riels drolls creoles tirls growls trials variolas oriels orioles rails pyrolas perils proles brills frails areolas parols krills dirls varioles carols girls arils areoles grails darioles pyrrols nerols urials gharials trails grilse drools carrioles drills aureolas aureoles trills burials ariels serials birls ceorls troilus whorls shrills
triol trail trial trill troll trolley trolly atrial stroll