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.
grazer grazier greaser crazier greasier grassier grocer crozer crasser crozier grouser grosser gorsier kreuzer creaser grocery creasier cruzeiro curser cuirassier corsair courser crosier crosser cruiser coarser caresser carouser
razer brazer grazer prizer greaser breezier racer raser razor rezero rozzer bracer crozer brazier eraser frowzier frizzier frouzier furzier creaser crozier freezer crazier grazier frizer kreuzer frizzer tracer
graze craze crazy grace grass grassy grays grease greasy