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.
wheatears whetters waters waiters wetters whitters wedders weeders waterzooi watthours waders wadders widders
wheatears tears waiters tuateras waters caters coaters gaiters maters natters tatters heaters paters retears seaters tatars chatters shatters gaters raters eaters ratters boaters beaters batters baiters matters oaters attars haters sataras daters taters tuataras patters hatters cheaters yatters tars