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.
creaser creasier greaser crasser greasier caresser curser crazier crosser coarser crosier cruiser courser cuirassier grassier carouser curiouser grazer crozer cursor corsair crozier cursory gorsier grazier grosser grouser kreuzer cruzeiro crosshair grocer coercer grocery
creaser greaser dresser praiser raiser raser brasier eraser foreseer verser harasser hoarser caresser coarser crasser creasier greasier parser presser terser
crease creasy greasy carassow cares caress cores crass craws cress creese cressy crews cries curassow cures grease acres