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.
barrenness bareness barrens baroness baronnes brownness barneys brens baronies barns beeriness barons brines bairns boreens burnies boranes bournes byrnies brinies brownies brionies burns brins brans brownnose brawns bourns borons brains browns bruins burans burins burnous birianis
barrenness greenness wornness bareness brownness freeness ironness greyness queerness moreness lornness pureness rareness soreness sureness direness trueness sheerness