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.
featlier footler fiddler
featlier motlier outlier nettlier hotelier littler sutler stillier staler cuddlier rattler mottler whittler tattler cutler footler loudlier kittler goodlier cutlery pedalier battler butlery beetler guttler nettler styler steelier settler bottler puddlier tootler butler deadlier dallier godlier taler tallier tiler atelier shuttler
featly fatal fatally fatly fetal fettle