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.
corm corium corymb gorm cram coremia crumb crime korma creme carom cream crummy creamy curium crumby crambe carrom quorum caramba crummie gourami gram grim grum grama grime grimy groom grume karma