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.
real really realia rely rial riel reel rale rail reoil rawly rally relay rouleau rile rill roil role roll rule ruly riley rille roily wryly
feal veal wheal weal teal deal zoeal zeal seal real peal meal leal heal sheal al el