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.
crazier crozier grazier creasier grazer crozer crosier cruiser creaser corsair crasser cuirassier cruzeiro grassier greasier crosshair curiouser curser gorsier greaser kreuzer crosser courser coarser caresser carouser cursor grocer coercer cursory grocery grosser grouser
brazier grazier crazier greasier racier raiser razer brasier brazer breezier frizzier frowzier furzier creasier crozier grazer frouzier praiser