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.
spate spat spait spite spaed spade sopite sapote spit zapateo sept sped spot speed spode spado sputa siped spout spied septa spued souped speedo sipped seeped spotty sapota soaped speedy sopped sippet supped sapped zaptieh spud
pate pupate spate pat capote chapati cowpat depute opiate spite paty peat spait sapote spaed spat repeat sopite zapateo repute tiptoe spade chappati