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.
reshow reshoe resh rechew reecho rash rush reach retch rishi roshi rushy reechy rushee wretch
reshow show toeshoe reshoe pshaw cushaw cashoo cashew bashaw cashaw showy shoo shoe shew shaw chow chowchow