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.
periotic periodic parotic pyritic paretic parodic piratic portico pyretic pyridic pratique
periotic neritic xerotic erotic erotica ferritic iritic critic aortic neurotic neuritic noritic parotic periodic pyritic cerotic soritic dioritic
period perdie peridia periti yperite