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.
ware war were wire wore wear waur wary wair weary whore where weer weir whir wiry whirr wirra wooer worry
are bare share chare ware tare dare rare pare mare quare care hare fare yare re ar