Is there a programming language which takes indent as containment markers? (and if so, which)

Question

I'm wondering if such a syntax (borrowed from C#, mind you) is used by a programming language, i.e., tabs for containment, without any "End" directive.

class Character
    static string Name;
    static int Level;
    static Inventory Inventory;
    static double Health;

    Character(string name, int level)
        this.Name = name;
        this.Level = level;
        this.Inventory = new Inventory(this);
        this.Health = 1;

    void Die()
        this.Health = 0;

class Inventory
    Character Parent;
    List<Item> Items;

    Inventory(Character parent)
        this.Parent = parent;

Answer 1

1. Python
2. Haskell
3. Occam

These are the ones I know of.