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.
haggis hags hoggs haiks haikus hackies hawkies hugs hogs hawks hicks hacks hikes hakus hakes hoicks hookas hackees hacksaw hawkeys hickeys hickies hookahs hookies
haggis iggs teggs daggas raggies noggs moggies luggies laogais quaggas gags jaggs jaggies gigs hoggs aggies vuggs veggies eggs buggies biggies baggies loggias miggs muggs piggies raggs doggies yeggs