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.
savourier savorier savourer savorer seafarer spherier severer sufferer
savourier furrier favourer savorier savourer devourer
savour savoury savor savior saviour savory