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.
coaler coalier cooler coiler caller collier clear color colliery colure collar calory culler galere colour gaoler calorie couloir gallery galleria clary clour gluer galore gluier killer queller collyria
baler paler shoaler sealer taler dealer realer haler waler coaler healer vealer whaler dialer heeler gluer fouler feller kneeler caller lehr coiler lier blear filler millier wailer oiler valuer bowler alar peeler fueller puller volery relier bluer howler veiler lowlier ruler collier viler fowler hiller galere slier faller sallier helleri wooler dueller tailer taller toller palier tiller woollier gallery chillier cholera sealery sheller poler dialler yeller rulier siller talar celery haulier jollier bullier haleru biller roller mewler hellery knoller giller eelier wilier teller moiler foolery pooler muller holler jailer baller filer holier flier nailer plier iller boiler vealier woolier culler leer oilier miler valor belier loller cooler raillery gaoler huller jowlier coalier bawler fleer bolero lear fullery dallier miller roilier clear hailer mailer hillier heller railer queller poller pallier bailer feeler willer tallier ceiler reeler puler mauler fuller rallier sillier killer luller dueler seller wheeler sailer tailleur mealier tiler tooler fueler toiler duller chiller choler shalier hauler shellier malar shoalier yowler
coal coala coaly col cool scall call coagula calla goalie callee coyly callow coulee calo coolly caul coil cole cooly collie cowl colly goal coly koala cola scale coolie scaly