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.
queans queens quins guans quoins guanos quinsy guanase quinoas guanays guineas guns cans kens koans keens kains cains kenos kanes kaons canes gains kanas canso cannas canoes quince gainsay goannas gunnies keenness
beans yeans jeans weans leans means deans peans queans paeans ens faenas aeons fawns bens fauns lawns lens pawns awns genus koans hyphens kanas gens ains beanos naans fans anis peens banns hymens ansa canes benes cans dense lenis wrens mains canso loans guineas lenos yawns nanas tens wains dienes sense scenes tineas tans sans weens queens wens whenas teens chains dens hyaenas yens dans wans penes unease rains rouens nans cains pens reins hygienes sains mensa pianos lense llanos kaons pans manse guans vanes anas manes hyponeas peons pians menus hansa venus banes fens keens mense sensa hanse veins liens hens manas foehns kains dawns vans lanes pansy janes lianes guanos manus veenas lenes bans gains manos kenos kens neons pains uneasy lauans fanos eons kanes nenes roans anes miens cense peins lianas penis zeins paeons anus mans fanes tense sanes denes weensy ranis panes scenas moans tansy ruanas wanes tonneaus wheens whens teensy sheens tains hyenas genes yuans