SuperCopier is a System Utilities software developed by SFX Team. After our trial and test, the software is proved to be official, secure and free. Here is the official description for SuperCopier:

SuperCopier replaces windows explorer file Copy and adds many features:
- Transfer resuming
- Copy speed control
- No bugs if You copy more than 2GB at once
- Copy speed computation
- Better copy Progress display
- A little faster
- Copy list editable while copyin
- Error log
- Copy list saving/loading