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.
zeds cedis cedes seeds zetas zooids suedes sets suds sods zits cites sudsy sties setts suets sadis seats sates stews sades sides cetes saids sodas zitis sudds sites
beds eds weeds teds feds feeds heeds geds coeds meds meeds needs peds reds reeds seeds zeds deeds weds sheds