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.
cols coils coles cowls coals cools colas coulis colies coleus coalas coulees collies coolies colossi culls kolas calos colessee koels clews class calls cauls colza cloys claws kolos coulisse clues coalesce gaols coalless clays kohls close goals koalas caulis callas callus classy caules calesa quolls cullis clause callose callees cullays cullies goalies callous guls goalless gals gules galas glees kales gleys kills kails glues glows cloze gulls gloss glass keels glias kilos gales galls
fools pools sheols wools tools dols diols sols pols viols mools mols gaols cools cols hols shools
col cola cole collie colly coly