A
food mill ("passatutto") also works very well for not just tomatoes, but lots of other foods with small seeds or bits.
I bought a French one ("Moulinex" -- it's a brand name but used in general, like "Kleenex" is for tissues) for about $14 at Winners a few years ago, and a metal one (better quality, but it was a gift) from Italy for about $25 at an Italian grocery store.
These things are worth every penny! If you put beans through it, it separates out the skins from the interior part, making the creamiest-ever bean soup that causes next to no gas! (Lectin, the gas-causing part of the beans, is only present in the bean skins).