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.
matin mattin matinee maiden mutine mutiny muton medina mutton madden median midden mouton mitten madonna mueddin muttony moutonnee
matin zeatin satin patin tin betaine ratan biotin patine laten retina routine reattain lattin lutein latino latina mattin tain stain phytin tiny wheaten mutiny beaten retain eaten stein tine ratine poutine patina oaten paten mutine cutin satiny gittin attain baton neaten retine rutin detain chitin
mat maid mate matey matt matte maut meat meaty moat maimed