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.
galliass galleass gallies galls galas glass glias goalless gallus galahs callas galeas glassy gals goalies gullies gallous galleys glassie gallows coalless gloss calls class goals gaols gales gulls quillaias classy glossa caulis cullis glossy coalas callus koalas kellies glossae cullies callous gulleys callees collies cullays callose killies guls quillais coulisse keelless calos gleys kills culls coals colas kales glues glows gules kails kolas glees cauls kayles quills quells quails caules guiles coulis colies calesa quolls
galliass lass dahlias pelisse paillasse lassi lasso alias bliss class classy coulisse galleass glass glassy glias quillaias palliasse plisse dulias las lis