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.
pent peanut pant punt pend pint pennate pinto pinot point punty paint pinta panto panty punto penned painty peened punnet pineta pointy pinata pointe pantie peined pond panda pandy paned pined poind pound
bent vent hent gent kent lent pent rent cent scent sent dent tent went shent
pen penna pennae penne penni pennia penny