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.
cooing cooeeing conga congo cuing going congou cueing gong conk king conic conky kiang cangue gaeing queuing queueing
boing doing looing shooing mooing going wooing booing pooing cooing hypoing liang piing hong oink pieing hieing pong haeing dingo suing gaeing feeing wyling seeing jeeing donga lingo tonga hying mongo bingo kneeing queueing geeing shoeing hyping cooeeing long ding feuing baaing miaouing wing linga kiang peeing hoeing gieing conga toeing cueing zing song jingo wrong king ping congo boink wring bongo pingo dieing tieing meouing being ling ruing sing ring teeing cuing ting tong queuing wyting bong dong gong young
coign coin coni coon cocoon cogon coigne