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.
shapen cheapen shippen shippon chopin chopine
cheapen shapen pen copen shippen deepen capon happen rappen loupen lippen lapin kippen keppen ripen japan peon pein peen pean paeon open reopen spean weapon paean yapon
shape chap chape chapeau chappie ship shop shoppe schappe