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.
sheafed sheaved chafed chefed shaved chaffed cheffed shaft sheephead shoved chevied chuffed shift shifty chivied
leafed sheafed sheaved chefed chafed cheffed chaffed weaved waffed deaved reffed beefed eaved heaved gaffed quaffed baffed loafed naffed piaffed reaved reefed refed refeed daffed defied waifed leaved yaffed fed