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.
panel pineal penal penial penile pinnal pinole punily penally pinnule pinnulae
panel banal runnel pineal meanly hymeneal lanely lineal noel kennel anal anele anil anneal tunnel dynel channel sanely kneel finely gunnel ronnel knell manly lonely quinela leanly cuneal cannel fennel canal vineal funnel tineal snell wanly cineol chunnel
pane pan paean paeon pain panne pawn pawnee pean pian piano pine piney pone apnea span