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.
cremes creams crimes crambes corms crams gremmies crummies cramboes grimes kermes caroms grumes crumbs carroms kermess curiums grammes cormous crambos kirmess corymbs cramoisy kermesse grams gorms corymbous gouramies gramas grooms karmas kermis kormas grammas grumous quorums gouramis
biremes cremes berimes bermes berms bromes formes vermes berhymes harems germs arames creams crimes gouramies gremmies grumes kermess perms premies proems derms terms crambes armies rummies frames ramees romeos rimes rhymes rems reams herms ramies breams brumes hareems roomies crummies grammes grimes kermes kirmess preemies primes seriemas dreams chromes
creme coremia corm cram crambe crambo cream creamy crime crumb crumby crummie crummy gremmie gremmy scream