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.
carrell carrel carl quarrel cruelly cruel carol carle creel carriole creole caroli corral corolla criollo cariole curl gruel krill guerrilla crawl grill curly craal coral crawly curial curlew curule greyly grille gorilla
carrell barrel ferrel irreal carrel quarrel morelle morello parrel sorrel surreal terrella
care carr carry scare scarey scarry car