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.
cocains cocaines coigns cocainize cockiness cocoons coignes coquinas cockneys cakiness cogons cognise kokanees gawkiness kookiness quakiness cognize
cocains cains cans recanes chicanes pecans takins cocaines scans regains recoins eucaines jacanas kains gains coins canso canes decanes toucans chicanos