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.
mongoe mongo mango mungo monkey mooing meouing monk miaouing manga minke manque muonic
mongoe gangue tango dengue pengo mungo mongo mango lingo lanugo langue quango congou bingo congo cangue jingo fungo bongo nonego pingo dingo tongue
mon moan money monie mono mony moon moony mown muon