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.
ceil ceili cel cell cella celli cello cilia cellae scilla sel soil zill sell sail seel sill silo zeal seal seely selah selle silly solei zoeal