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.
quarrel carrel carrell queerly curl carl carriole cruel carol creel gruel guerrilla curly carle curial curlew curule greyly caroli corral creole cariole cruelly
carrel quarrel parrel barrel parral surreal sorrel saurel rarely irreal laurel carrell ferrel barely ariel areal yarely
quarry quaere quare aquaria square