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.
progged prigged perked porked parked percoid peruked precode pricked paroquet parroket preguide preact precut parkade parquet porrect pricket
progged frogged trigged ragged raggedy rigged rogued rugged bragged frigged fragged frugged cragged prigged rerigged dragged drugged shrugged