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.
coals coalas cols calls colas calos cowls cauls coles goals coils cools coalesce coalless koalas callus coulis colies calesa callas coleus caules caulis collies gals callees coulees callose callous colossi goalies coolies goalless colessee coulisse kolas galls gales class culls gaols close galas claws kails kales koels cloys clews clues kohls clays colza kolos quails cullis kayles clause gallus galeas galahs classy quolls gallies gallous gallows cullays cullies galleys galleass galliass guls
coals foals shoals goals als sals bolos heals oils kails roles awls haoles gaols mauls aals molls kolos halls vales hales miauls joles alas pawls rales jowls balas cools coalas knolls molas coils fools hols bals baals pools coles diols holes veals ails phials voles noils balls sails dials galas bales moolas tails pols sauls reals tolus tales dolls solus walls toles whales wawls wholes nalas cholas shales shawls sheols duals shools yawls poles wails violas kohls pals owls lolls talus toils soils bails calos polls boils rials dales deals boles koalas balsa galls zeals solos quolls pales oles bolls ales jouals viols pails bawls mools moils cols cowls roils also polys false jails kales hails foils fowls gals cauls sales vials rolls holloas gales mails hauls bowls vails hilloas ghouls noels howls koels malls fails kolas calls colas falls aiolis alls nolos palsy meals males hulloas dals lalls talls teals seals fouls halloas quails reoils mols tools bolus rails bolas bialys bialis souls soles halos palls valse dahls taels moles wheals tolas reales tolls talas doles sols wales wauls weals polos salsa nails wools cholos shauls sheals dols polis peals sials yowls
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