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.
quaffed gaffed cuffed coiffed caved coifed goofed coughed couvade
baffed gaffed chaffed waffed yaffed daffed piaffed quaffed naffed sheafed leafed cuffed loafed riffed offed puffed coiffed haffet luffed chafed miffed fifed cheffed pouffed whiffed huffed tiffed muffed reffed feoffed boffed biffed doffed waifed ruffed buffed chuffed fed