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.
loof loofa loofah loaf leaf levo lief life love luff laevo leafy lough luffa
hoof coof goof loof poof roof whoof woof of