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.
newwavers knaveries navars nefarious knifers niffers
wavers newwavers avers wivers laveers averse beavers havers heavers cavers aivers quavers lavers ravers reavers savers waivers leavers wafers weavers pavers shavers