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.
carrel carrell carl quarrel cruel carol carle creel carriole caroli creole corral cariole cruelly curl coral crawl curly gruel craal crawly curial curlew curule greyly criollo
barrel parrel sorrel quarrel ferrel carrel reel cruel sorely saurel corral rarely sorel cereal boreal parral carrell morel purely loreal choreal real surreal oriel irreal ariel rely riel laurel barely jurel areal direly creel surely pyrrol gruel merely ureal yarely
carr carry car care corrie curr currie curry karroo acari scar scare scarey scarry scary