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.
sapota sapote spot sputa spout septa spotty spat spit sept spado sapid spate spode spait spite sapped sippet soaped sopite speedo zapateo zaptieh
sapota pot tapeta sputa spot septa sapote repot nepeta lepta capote copout capita bowpot boughpot pout poet pita spout depot teapot