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.
okapis
okapis capias wickapes scaups recopies gaps magpies becaps capiz capos caps copies cowpies gapes capes gawps guppies kapas kepis kewpies koppies agapes kakapos kneecaps recaps scapes toecaps wicopies