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.
safari suffari safer sofar zaffar saver savor savour zaffir savior savory suaver zaffer suffer zaffre saviour savoury savvier
suffari safari far afar chivari zaffar sofar vivaria affair gharri varia fiar fear faro fare fair shofar