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.
quaysides gaseities castes quests casitas gussets gustoes keysets caseates casettes coesites cassettes casts gasts gusts
daysides quaysides waysides sides asides besides mysids resides residues seasides