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.
crumby crumb crummy creamy corymb curium crambo crambe corium crummie caramba cram corm grum carom cream creme crime grimy grume carrom gremmy quorum coremia
brumby crumby rumba rummy crumb crummy