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.
panacea pinnace ponce pence panes pounce paeans pannes pawnees pans hyponeas pains pones peans pinas pawns pines pansy pians penes punas paeons pensee peones pianos pinnas ponies pennies peonies pinnies
panacea gynaecea menace nance pinnace tenace