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.
colorize calorize calories colors colures glories colours collieries claries couloirs clours galores coalers glorias coilers clerisy collars coolers colliers glorious galleries clears glares
valorize calorize colorize lories valorise velarize calories glories pillories polarize solarize dollarize tellurize
color calorie calory clour colour colure couloir