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.
priedieus parodies parities purities parietes perdus prides parties pyrites periods peritus proteus proettes yperites paradise pyritous pretties prods pards prates prudes purdas pirouettes parodos purdahs parades pardahs parados pirates perdues proteas pierrots protease proteose parts ports prats