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.
rochets rachets ratchets recheats rachides rachitis reshoots
fitchets ratchets rochets sachets hatchets cachets latchets rachets recheats chitchats sheets cheats chits machetes lichts wauchts outcheats wechts chats yachts
rochet rachet recheat roached ruched arched brochette crochet trochoid