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.
questor quaestor quester castor gustier keester keister keyster kiester caster costar coster gaster coaster gastrea
quaestor nestor questor wester diester wrester rester pastor quester ester nester maestri store story stour bestir fester castor keester vestry kiester pester maestro restore visitor zester history tester jester yester