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.
whore wore where were whir wire ware worry whirr wooer wherry whirry war wair wary waur wear weer weir wiry
chore whore shore ore shrew shire core shoer sore kore hora bore fore more morae moire lore share tore hour gore hoar hare oorie pore dore where hoer chorea wore choir hire chare here yore