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.
pecan pekan pagan pekin
pecan can chicane decane skeane skean scan recon recane pekan cocain jacana vegan began quean cane cain toucan chicano
pec paca peag peak peaky peck pecky pica apeak speak spec speck