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.
doggies dogs doxie dikes togues dagoes daggas dickeys dickies duckies dags digs docs togs dugs dioicous dagos tokes dexie tikes teggs dukes decos docks dicks dekes decks togas degas dykes decays decoys dekkos toques degauss tekkies
aggies baggies biggies buggies veggies jaggies luggies moggies piggies raggies doggies haggis loggias muggees raggees reggaes