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.
steric stearic hysteric strick satiric satyric struck strike citric stork stirk stark strake streak streek stroke strook streaky
hetaeric deuteric steric hysteric neoteric nitric motoric strick satyric hydric stearic triac satiric bawdric trick citric outtrick derrick toric vitric iatric quadric meteoric metric yttric daric daturic butyric dihydric
stere stereo ester asteria sutra strow star stare starry steer stir store storey story straw strawy stray strew stria striae stroy aster astray estray