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.
piggies pigs pixie pikis pikes pokies piques pegs pugs pics pecs peeks pukes picas peags picks pokes peaks pekes pikas paiks pecks pyxie pekoes pokeys
aggies baggies biggies buggies veggies jaggies luggies moggies piggies raggies doggies haggis loggias muggees raggees reggaes