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.
pawns pans pawnees peans pians pansy pains panes paeons paeans pianos pannes pins puns pens pons pions peens pines pones punas pinas penis peins peons penes poons pinnas peones pensee ponies pennis panacea pennies peonies pinnies hyponeas hyponoias
awns yawns pawns dawns fawns lawns peans snaws owns ansa pans bans cains vans fans paeans nans panes manus cans janes nanas vanes pains sanes fanos kanes sains beanos yeans chains wins weans wanes towns tans downs manse pians pansy koans mans guanos hansa gains naans anus kains knowns ruanas llanos lanes ranis canes gowns means kaons ains fauns tains banes gnaws banns guans dans anes fanes anis beans jeans lianas manes kanas rains lauans pianos mains manos roans manas anas hanse lianes wyns leans wons moans deans loans tansy wains queans wans wens sans canso yuans
pawn pawnee pan pain pane panne pean pian piano span spawn