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.
pommel pomelo pummel pummelo pumelo
kummel pommel pummel mel mammal timely lamely smell gamely pummelo gimmal pomelo namely mell gimel mewl meal pumelo camel homely samiel comely tamely hammal umbel
pommee pommie pommy pom poem pome pomo ipomoea