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.
walls wallas wallahs wallies wallows wails wales wills wauls weals wells wawls whales wheals walies waylays wayless wellies willows willies woollies wiles wools wheelless wheels whiles wholes woolies wheelies
alls palls malls falls balls lalls talls walls halls galls calls als mauls bialis awls gulls also vales callus aals coals balsa callas jells jills bails cells bulls ales cullis gills molls hillos vials hallos dolls hollos boulles baals nails cauls fillos niellos failles kails hullos fellas deals jellos phyllos jails tellys goals dials knells phials ells tails false nalas bales nulls tulles wales rilles rolls jouals taels pulls wells wheals challas duellos pawls chillis chollas shauls zeals sheals teals shills sials yells tolls sells reals maills cellos tales fells folles phallus hulls sals dahls mulls wawls ails pals lolls bawls bells ills quells heals alas belles lulls sauls seals quails selles follis hells valse mails nills reales mells hills filles meals pails dalles paellas bialys gaols veals tills quills bals villas hauls gals talus rouilles tailles fails hellos vails fulls hales bolls quolls hollas males coalas dells miauls pales kills fills rales culls halos vills calos sails pills bills rills balas ollas peals sills galas mills kales ghylls villus polls ballsy weals gales dales gallus mullas knolls milles hails dals foals rials salsa rails dulls zills koalas wails palsy wallas scillas dills wauls sales duals whales wills tuilles challis talas chills shales shawls tallis shells tells shoals yawls yills
wall wallow wally walla wallah wallie welly swale wellie willowy well willie wawl waul weal waylay whale will waly willow wale willy wail swallow