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.
human humane hemin haemin hominy hambone
human man maun many mano mane mana humane mawn caiman lawman cowman lumen remain roman rumen simian daman domain woman showman leman main moan cumin bayman bemean bemoan bowman foeman mean amain immane cayman layman liman numen reman romano seaman soman demean toman shaman yeoman