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.
signa signee soigne skin soignee segni segno skein sequin sicken skinny squinny syconia scan
signa coign guinea kina quinoa beigne coigne coquina laguna ligan mackinaw nagana regna soigne tigon wigan