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.
froe fro fire frow free frae faro fere fore fare feriae furrow feirie faerie farrow fir for fur fry fer far furrowy fury fiar fray vrow fear fora fair four vireo firry furry foray feuar ferry feria fairy faery vrouw fiery