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.
footler featlier fiddler
footler tootler beetler taler battler tooler toller toiler kittler tiler motlier nettler outlier settler bottler shuttler styler butlery boodler featlier cutler cutlery guttler littler mottler nettlier rattler staler sutler tattler butler doodler whittler yodler