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.
pieces peaces piceous puces paces peases posies peises poises pisses pussies poesies psis poaceous poussies pases poses pesos pisos puses paisas passes pauses pizzas posses pusses paseos piazzas possess
faeces nieces feces pieces sycees diocese rices daces races sauces fuzees recess bices vices puces ices wheezes duces paces maces peaces facies laces cees cess sees zees aces voices deuces faces fasces dioecies razees deices voces sices luces resees feezes heezes hyraces saices dices taces syces fauces mezes lycees juices fyces fusees fices fezes lessees choices
piece peace pice pies apiece pipes specie spice spicey spicy spies