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.
viragoes viragos virgas farragoes forgoes foregoes frags varicose verrucas verrucous verrucose frigs frogs frugs fracas freaks frocks
farragoes viragoes foregoes forgoes viragos cargoes cargos karaokes largos pargos sargos