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.
grouchy grouch grutch crouch crotch caroch crutch grushie carroch caroche caroach crush curch gursh cratch creche garish qurush currach kerchoo
grouchy rouche barouche farouche crouch grouch torchy churchy