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.
gipons jupons japans jeepneys
gipons coupons weapons shippons yaupons yupons jupons yapons pons youpons capons reopens ripens cheapens lapins puns shippens japans pins pones spins copens tiepins poons lupins opens peones taipans depones pions kneepans douppionis pans pens lipins happens chopins paeons spans teopans deepens pippins doupionis lippens repins spoons peons