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.
kvas kivas kvass kavas kavass kafs kaifs kaphs guavas keeves kiaughs kifs guvs kefs caves coves gaffs keefs kiefs cafes kophs kufis caphs caffs
vas favas vivas javas guavas kavas kivas kvas lavas novas devas divas shivas