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.
moss mosso mossy mos mousse mess miss mows moas muss mass moos missy mosey massy massa mouse meows moues moose messy mussy meous masse mousy miaows missay mousey miaous mas mis mus messiah masa maes mesa mise miso mews mozo muse mays maws mezzo
boss foss joss coss koss loss moss doss toss os