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.
fullams flams flames fleams flambes films flambeaus filmis flimsy flumes foliums vellums phellems phyllomes phloems volumes
fullams lams chillums slams salaams gloams glams claims lamas lambs lames llamas loams alamos blames blams flames flams fleams phellems vellums calamus clams gleams kalams salamis ulamas chlamys