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.
fury furry fry fur fray four furrowy faery fairy feuar fiery firry foray ferry furrow forwhy fro fer fir for far fear fare fere froe frae fire fore faro free fair fiar frow fora vary very feria veery
bury fury jury kaury loury saury