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.
carrom carom caramba corm cram crumb crime karma creme groom cream crumby corium crambo crambe corymb curium creamy crummy crummie
carrom rom chromy chrome tearoom promo proem marram groom carom vroom varoom from ferrum broom bromo brome barroom aroma room roam neuroma prom dayroom chroma chromo showroom
carr carry car care corrie curr currie curry karroo acari scar scare scarey scarry scary