Great way of preserving your tomato harvest - make easy additions to dinner menus. Top grilled chicken breasts for a little taste of summer in the winter. See also: Roasted Tomato Soup
To freeze individually: let them cool slightly then lay them out on parchment-covered baking sheet or similar, then freeze. Once frozen, I put them, two per pack, into freezer bags. This is how much we would use, normally, for making dinner.
To freeze altogether: pack into pint- or quart-size container, then cover the top with olive oil to keep head-space to a minimum.