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.
ped peed pied pooed hyped pod pud hypoed pad pet poet padi pood pate peat paid podia pieta petto peaty paddy piety petty petti pattee pattie payday ptooey puttee puttie