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.
boraces braces boreases brazes bourses braises braizes brasses berceuse brassies birses burses bursas brises broses brazas borzois breezes brisses browses bruises hybrises
hyraces graces boraces races terraces traces braces terrases farces carices orrices farcies crases hydrases cruces forces curacies phrases grazes tierces varices mercies urases erases truces rases rices murices terces sources arrases coerces pierces prices trices gyrases brazes merces razes crazes piracies prases charases