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.
stereo stere steer strew stroy stare store strow satire suiter setter sitter souter suture storey seater stoure sootier stir star hysteria sautoire stour sitar stray story stria satyr stair seder sutra straw citer sadder stoury suitor seeder starry satara strawy striae satori sautoir seedier stourie zootier
stereo dere batterie hetaerae hetero coterie metre metro niterie pedro retro stere