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.
viragos viragoes virgas frags farragoes forgoes foregoes varicose verrucas frigs verrucose verrucous frogs frugs fracas freaks frocks phreaks
viragos rags turacos tragus drags sargos largos crags cargos cargoes viragoes frags forgoes farragoes erugos aerugos burgoos brags argosy raggs ragas gregos pargos sorgos touracos trigos choragus