what are 4 name brand powder laundry detergents?

What are 4 name brand powder laundry detergents? I need to know for a science project, but trust me, I am not cheating! I just can't think of four of them! lol

Since you are an advisor,
Tide, Cheer, All, Arm & Hammer, Gain, and I'm sure many, many others.
Tide is what I swear by. It's also what my mother used.

In England its Dazz, Persil, Airiel, Tide Just thought I would add that for you, its probably of no use what so ever.
Good luck