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.
squall squally squill squeal squilla scull skull scall squillae sequel sequela seagull sequelae scale scaly skell skill skoal suckle cecally
squall call jugal fugal vagally cull cully faucal gally gull scull gall cecally skull regally squally locally squill laically ducally coequal gully quail scall vocally focally fugally equal begall equally quill quell quoll quale rugal seagull recall calla legally squeal coequally ducal caecally teocalli