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.
ruche rouche rushee rechew rotche rich rush rushy ratch roach reach rotch retch reecho reechy reshoe wretch rash resh
gauche ruche douche rouche louche touche fitchew heuch butch bouchee gaucho cutch boche mouch much nautch lychee couch nuchae pouch rechew vouch fitchee duchy tache teuch eche sauch sheuch such mache nucha pouchy fiche ache gouache lichee hoochie quiche mutch vouchee chew miche seiche mucho ouch niche rotche cache hutch nitchie dutch techie touch touchy yuch