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.
kohls kolas koels kolos koalas cols kills colas cools kails coals kales cowls keels gaols coils goals kilos coles coalas colies kayles coulis coleus quolls goalies keyless kellies coolies killies colossi coulees collies goalless keelless coalesce coalless colessee coulisse gals guls
kohls bolus owls tools bolos coals hols doles polys foals knolls bolls molls cowls reoils colas molas moolas bowls joles oils lolls cols polos shuls shoals wools tolls dols dahls polis viols cholos boils tolas noils solus boles roles goals soils kolos solos haoles bolas foils moles nolos howls aiolis mols moils coils pools cools fouls coles mools koels pols diols holes jowls fools tolus oles quolls polls ghouls noels voles soles kolas rolls gaols roils fowls sols toils shools buhls cholas violas poles souls dolls toles wholes sheols yowls