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.
crookery crooker crockery croaker croakier corker corkier cracker creakier groggery craggier groggier quirkier
crookery rookery rocker rockery rookier broker forker corker croaker crockery crooker porker trickery worker