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.
proven parvenu parvenue profane paravane paraffin
roven proven raven riven carven craven graven parvenu driven shriven
prove parve parvo perv piroghi preview prevue privy prof proof purvey purview