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.
piecer pacer pacier pisser poiser pussier pizzeria poser passer pauser poseur pessary pissoir
piecer geezer chicer douceur dicer saucier cicero racier cero pacer nicer macer lacier lacer juicier juicer icier cere voicer viscera facer beezer seer pacier racer ricer saucer deicer dicier wheezer choicer
piece peace pice pies apiece pipes specie spice spicey spicy spies