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.
giaours gears giros jars gyres gyros gyrus gerahs gyrase gyrose juries jarrahs
giaours ours tours sours parous knaurs lours lauras kouros kauris course auras gaurs houris fours bourse auris aures hours pours douras yours ars ors