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.
parotic paretic parodic periotic piratic portico pyretic pyritic periodic partake partook pyridic pratique
neurotic cerotic parotic xerotic erotic pyretic ferritic diaeretic critic soritic pyritic barytic quartic heretic portico erratic uratic dioritic erotica piratic paretic neritic neuritic noritic parodic iritic hieratic cretic periotic dieretic aortic diuretic uretic
part parity parodoi parody parrot parroty party peart proette protea protei apart sparoid