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.
cresyl cresol creosol carcel crossly crusily crissal crassly coryzal coarsely carousal greasily crousely carousel carrousel curiously grisly crazily grossly grassily
cressy cress screes curse cures crus cross cris cries crews creese creasy crease crass corse cors cores carse cars caress cares crissa crosse cruse curs acres screws