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.
fare far faerie free fire fear fiar fore frae fair faro froe fere fairy feuar faery feirie feriae farrow var fir for fro fur fry fer vair vary vara fora four fury frow fray feria ferry fiery firry foray furry varia vireo
are bare share chare ware tare dare rare pare mare quare care hare fare yare re ar