With SLM you can easily manage your Steam and backup libraries.
SLM is fully open-source.
SLM is a community driven project, licensed with MIT license.
With SLM you can manage your Steam libraries at one time.
You can queue up the tasks and forget.
Task Manager and managed tasks are running on a different thread.
So: If an error happens while moving, SLM will stop the process and warn the user without touching to anything.
SLM is tested and different methods compared to get the fastest results before reaching to the community. Also faster than Steam's itself.