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.
gallows gallous glows galls gallus gals gallies callous galleys callose gulls galliass gaols gloss galleass gales calos goals galas calls goalless glossa galahs callas callus glossy galeas glossae callees gulleys gullies goalies guls coalless close kails culls clews kales cauls cloys kills coals glass gules glees gloze cowls glias kolos glues gleys claws kilos quills quails koalas caules calesa guiles caulis cullis coalas glassy quells kayles quolls collies colossi cullays cullies glassie kellies killies
allows hollows gallows fallows willows sallows tallows fellows bellows yellows mallows pillows mellows hallows wallows follows shallows billows lows slows halloes blows halloos phyllos hilloes flows villous belows fillos helloes alloys lowse hullos gallous niellos callose hellos lilos plows hulloes holloos hallos jellos villose hollos hilloas hillos halloas duellos holloas hulloas callous hulloos felloes glows bullous holloes cellos blowsy