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.
squillae squilla squill sequelae squall sequela squally scull sigla skill skull squeal sickle suckle sequel seagull scall skell socle scale cicala cicale sickly sigloi
squillae killie quillai aiguille coquille rocaille squilla