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.
relater realter relator reletter reloader realtor
later slater relater zoolater elater dilater plater violater fluter kelter alter violator coulter jolter liter delator floatier fellator latter diluter clatter vaulter zoolatry poulter colter flatter chelator tilter haltere dilator saluter platter pelter balloter moulter miltier melter quilter philter polluter kilter joltier milter molter jilter lader belter salter palter pleater platier maltier vaultier guiltier saltier blader collator siltier relator gloater plaiter slatier halter filter floater faultier falter bolter bloater bleater realter politer blatter billeter welter shelter
relate realty relaid relet relit reload prelate