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.
garrulous gruels querulous carolus carrels carrells quarrels carls carrioles grilse graals grills carols gorals growls grails carles guerrillas carless corrals goorals grilles careless carioles criollos curls
garrulous querulous parlous perilous