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.
callus callous calls gallus callas callose gallous callees culls galls clues calos cauls coals coalless coalas calesa caules caulis clause coleus cullis cullays galleys gallows collies gallies cullies cols gals galliass galleass coalesce goalless cloys class coles glues close cools gaols claws kales gales gulls clays clews goals kills cowls galas coils kails colas quells galahs koalas quills classy coulis galeas colies quolls kayles quails gulleys killies kellies coolies gullies goalies coulees colossi colessee coulisse keelless quillais
phallus villus gallus callus plus lues lalls balls bullous kills coleus hullos halls hollas flues culls fells molls values alls glues shells hells ileus bolus tills lulls hills galls tulles duellos solus failles quills cellos falls bulls wells dalles yells chollas milles wallas tolus tells tailles dills zealous challas scillas rolls polls pilous palls nills mulls slues ells maills chillis sells rilles pileus knolls malls fillos talls gills jellos jills callous folles fulls ollas quolls blues ballsy nulls bolls bells tellys calls knells hillos bills dolls soleus villas quells rouilles ghylls chylous vills walls zills pilus boulles tallis filles pilaus hellos fills pulls tuilles malleus selles hallos follis mills lolls fellas belles jealous challis hilus hollos hulls ills gulls villous phyllos jells callas clues cullis gallous flus lulus sills shills dells chills mells ulus tolls talus dulls sulus mullas wills cells rills poilus pills paellas niellos yills
call callee callow calla coaly scall collie gally calo caul coal coala colly cully gall galley cull scale cullay scaly