What is the best trade copier?

Hello, what is the best trade copier out there?

I need one whereby:

  1. Master account can be a demo.
  2. It allows linking up across different brokers.
  3. The master account can forcefully remove subscribers.
  4. Doesn’t require downloading and installing new things.
  5. Free.
  6. Best if it allows for automated profit-sharing as well.