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.
agenes agenize agency
genes hygienes agenes widgeons dodginess sageness pigeons oogenies gudgeons cajones cageyness genies gens genus janes jeans jennies joannes jones cojones biogenies loginess biogens hypogynies edginess pudginess hugeness zoogenies johnnies dudgeons caginess wigeons