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.
garigues grigs cargoes grogs cargos gregos cariocas karaokes groks carex carks crakes creeks cricks crocus crucks quarks
garigues rogues argues brogues morgues periques pirogues reargues drogues