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.
squill squilla squillae squall squally skull scull skill squeal sequel seagull sequela sequelae scall sigla skell sickle sickly sigloi suckle soggily
quill squill squilla skull aiguille squall skill scull rocaille maquila coquille quoll beguile seagull cull quail kill gully gull guile cully quell tequila