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.
squealer squaller squallier squalor scaler suckler sculler scalier scullery sclera scalar scalare sclerae scowler secular sicklier cycler
squealer caller coaler coalier galere gaoler queller kegler likelier recaller regaler scaler scalier squaller
squeal sequel sequela sequelae squall squally