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.
climate collimate coelomate claimed climbed gliomata calamite calamata coelomata columbite glimed calmed culmed calumet clammed calamity kalamata gleamed glommed gloomed
climate collimate limbate coelomate palmate playmate plumate cellmate soulmate