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.
connote connate conte conned cannot coontie condo coned count conto coined canoed county conoid canned keynote coigned cuneate cant cunt canty caned kente quinte kenned gunned gunite gowned gannet cnidae conidia gahnite kainite quinate quinnat quoined
connote note innate cannot connate keynote mannite pennate pinnate cenote denote dunnite tannate not