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.
sapote sapota spot spate spout spite spode sopite sapped soaped spotty zaptieh zapateo spit spat sept sped spied siped spait spaed spade spado sapid speed spued seeped sipped sippet sopped souped speedo speedy supped zapped
capote sapote pot sapota teapot repute depot repot spot pupate spite copout sopite bowpot epode boughpot pout poet pate hypoed spate spode spout depute tiptoe