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.
pippins pipiness peppiness papains pepinos hypopneas
pippins pins shippens chopines supines spines cioppinos repines lapins pepinos papains opines lupins lupines lippens lipins pains happens pions pines pinas pians peins rapines repins sapiens spins tiepins chopins shippons