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.
dizen dozen diazin diazine design disown decennia
mizen dizen wizen zein cozen mizzen risen seizin zazen dozen wizzen chazzen
daze diazo dice dicey dies dioecy dizzy doze adieus adze diets dites ditz ditzy