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.
factory factor facture victory faggotry vector victor fagoter victoria vocoder
factory victory rectory sector rogatory nugatory nectary locutory locator lictor lactary reactor coactor vector factor actor rector lector hector sectary victor doctor