Herbs that go well in tomato soup include basil, oregano, thyme, and parsley. You can use fresh or dried versions of these herbs. Other herbs that could be used in tomato soup include marjoram, rosemary, and tarragon. It's best to add herbs towards the end of the cooking process so they retain their flavor. You can also garnish the finished soup with fresh herbs for an added pop of flavor and color. Experiment with different herbs and see what you like best in your tomato soup!