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.
sancta sunket snacked snicked snowcat zincate scincoid sonicate
sancta enact coenact connect reenact tinct uncut
sang sanga sank snack sneck snick snuck sync saucing