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.
gloomy gloom glom gloam glioma gleamy glum glim glam glime golem clomb gleam glume clammy cleome coelom qualmy coelome coulomb gallium
bloomy gloomy loamy loom bloom gloom sholom
glow aglow igloo googly googol