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.
glows gallows gloss glossy glossa gals glossae gallous guls close gules kilos gales claws glass gulls calos clews glias glues glees gleys gaols cloys kolos galls gloze goals cowls galas galeas guiles glassy gallus galahs colossi galleys glassie gallies gulleys gullies callose goalies callous galleass galliass goalless cols
allows slows plows tallows glows billows flows bellows fallows wallows fellows shallows lows hallows pillows yellows willows mellows hollows blows mallows gallows follows sallows belows fowls holloes alloys jealous bullous helios callous cloys pilous floes plews haloes filos oleos hollos felloes aloes niellos gloss callose polios laws blaws calos loos telos duellos xylose phyllos slews silos cellos chylous kilos holloas lowse bolos blowsy kolos floss lose helos folios owls halloas hullos ploys olios flaws lilos halloes clews pilaws cowls jowls hilloas close hulloos fillos villose hellos claws hillos holloos helloes bowls hulloes pilose hallos howls hulloas villous bylaws nolos hilloes halloos halos jellos loss flews polos filose slaws sloes solos zealous gallous milos cholos yowls