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.
squallier squaller squealer scalier sculler squalor scullery scaler suckler sicklier scalar sclera scalare sclerae scowler secular
squallier caller coalier collier colliery gallery recaller scalier squaller weaklier
squall squally squeal squill squilla squillae