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.
medusae medusa medius meds modus meads meeds meatus medias meadows metisse mediacy mods muts mads muds mids mauts metes motes metis modes maids meats mates moods mites mauds mutts meets mutes midis mateys matsah mattes mottes maydays metazoa middays middies mottoes muddies