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.
vigas vigs figs vacs vugs vagus vuggs vogues vacuous veggies fags fogs fugs
vigas taigas saigas gigas gas ragas pigs gigs migs gaes rigs gays loggias quaggas figs bigos kaiaks bagass gags sequoias zigs degas laogais vigs togas wigs yogas agas jigs biogs goas digs iggs picas miggs megass ligase guaiacs gewgaws micas sagas geegaws pikas daggas reggaes cigs bigs biogas sikas teguas whigs chicas yugas