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.
calamary calamar calamari calmer clamor columbary clammer clamour claimer clamber clammier claymore glamor columbaria climber clumber glamour gleamer gleamier qualmier
calamary calamar calamari columbary palmar palmary
calami calm clam claim clammy kalam