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.
regains reigns recanes recoins requins racons recons racoons reckons rockiness
gains regains takins pagans cocains piggins noggins muggins logans ligans leggins cocaines lagans naganas cains vegans eucaines bogans biggins kains guans hogans wigans