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.
valuer vealer valour vealier viler valor velure volery veiler velour faller failure filer velar volar fleer fluor flour flier feeler floury filler flurry fueler fowler fuller feller fouler fleury foolery fueller fullery velaria
bluer gluer valuer feller fuller caller haler mauler lear velure fluor hauler filer vealer clour healer holler volery killer collier mewler fouler oilier fueler culler jollier lehr faller loller gallery lour boiler puller veiler flier valour moiler leer peeler giller feeler eelier bowler sallier huller hillier sealery dialler palier wailer taller siller whaler wilier wooler relier woollier rulier chillier cholera sheller shoaler tailleur yeller teller toller filler kneeler miller hellery dealer tiller lier realer nailer roller dueler duller colure poler pooler luller coalier soilure celery slier raillery howler lure choler pallier biller bolero seller ruler heller sailer galere shellier dialer tooler reeler poller muller flour oiler mailer fowler dueller wheeler blear coaler clear bawler colour hiller fueller failure miler foolery bullier paler helleri jowlier plier velour holier allure cooler tiler hailer iller haulier baler baller blur fleer coiler slur jailer tailer railer heeler gaoler queller vealier fullery taler belier viler bailer woolier knoller shoalier shalier rallier sillier sealer ceiler roilier puler toiler dallier haleru willer millier mealier lowlier gluier dolour tallier waler chiller yowler
value vail vale valley veal vealy vial oval ovally