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.
peds pedes pads puds pets pods pates poods padis poets peats pities petsai pietas pieties putties paydays poetess patties poetise paddies potties puttees piteous paduasoy pats pits pots puts patsy pitas potsy pouts putts
beds eds weeds teds feds feeds heeds geds coeds meds meeds needs peds reds reeds seeds zeds deeds weds sheds