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.
farcy farce farci farcie fares force fairs furzy faros frays fears fiars frouzy frowzy feuars fierce frowsy frizzy forays faeries fairies farrows firs friz furs vars
farcy racy farce farci curacy mercy piracy pricy
far faerie faery fair fairy fare faro farrow fear fiar afar