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.
leafs loafs leaves lavs lavas laves luffs loves lives loofs levis laighs laughs levees levies loaves loofas luffas loofahs luvs
leafs sheafs efs baffs kefs quaffs foveas fiefs kiefs oafs reefs reifs beefs seifs defis teffs waffs chafes chefs loafs keefs naifs fease naffs effs neifs cafes caffs gaffs kafs kaifs jefes haafs jiveass raffs refs safes daffs devas uveas waifs chaffs chiefs yaffs
leaf leafy leave leavy leva lief loaf alef blaff cleave clef sleave