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.
porch parch perch preach poorish preachy parritch parish perish parashah
porch torch birch arch rotch crouch currach larch march birrotch perch search diarchy brach soroche torchy church orach roach brioche curch broche brooch caroach caroch caroche carroch crotch broach grouch lurch merch parch rich troche churchy
poor poori pore pour aporia spore