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.
sleaves slaves slaveys sleeves slieves solves salves selves salvoes selvas silvas sulfas salvos sylvas salivas salvias sleighs sulphas salifies selfs sluffs sylphs sloughs
cleaves leaves sleaves deleaves calves delves sleeves valves slieves releves halves pelves glaives claves elves slaves helves levies levees laves relieves selves slaveys believes loaves salves shelves
sleave slave slavey sleeve slieve