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.
squally squall squill squeal squilla scull squillae scaly scall skull sequel cecally seagull sequela sequelae scale skell skill skoal sickly suckle soggily
coequally squally equally legally focally laically caecally vocally vagally fugally cecally gally gully galley cully cullay regally squall gulley locally ducally