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.
erotic erotica erratic
erotic neurotic parotic periotic cerotic xerotic heretic pyritic cretic dieretic hieratic ferritic aortic portico diuretic erratic paretic soritic uretic toreutic uratic erotica dioritic iritic pyretic neritic neuritic diaeretic barytic noritic critic phreatic quartic parodic piratic periodic choreatic