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.
brooch broche broach brioche brach birch barouche birrotch breech breach boorish brachia brash brush brashy brushy bearish boarish
brooch caroach torch rotch birrotch brioche broach broche roach caroche caroch carroch crotch crouch grouch porch soroche troche