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.
colliery collier coalier culler coaler caller collar cooler coiler gallery couloir collyria clear color clary killer calory glairy gluier colure gaoler colour calorie queller galleria clour glair glary glory gluer galere glaire
colliery lier volery haulier hellery holier jowlier collier vealier foolery coalier gallery gluier oilier milliary pallier raillery relier rulier ciliary sealery slier tallier woolier chillier shellier mealier fullery fleury millier eelier leary bullier bleary biliary belier jollier leery hillier flier glairy miliary lowlier palier plier rallier roilier celery sallier sillier dallier wilier woollier shalier shoalier
collie colly coolie coolly col