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.
syces sycees sices saices sauces sises sizes sasses susses ceases cesses seizes sisses souses seises cissies sassies seesaws sissies
fyces syces syce maces lycees ices laces cess voces faces sycee aces paces saices recess sices hyraces cees faeces deices dices dioecies taces bices vices nieces fauces pieces facies lyses luces voices juices physes sycees feces peaces fices fasces rices races sauces puces daces deuces diocese duces choices
syce sycee sycees syces sice fyces lycees sices