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.
seesaw sees cees saws seas seis sews sues zees seise seize sycee sis sos
resaw seesaw saw mesa resay resew resow saws
sees seesaw see seas wees cees dees rees sues pees seise seis jees lees geese gees vees fees bees sews zees tees shes