- MinLog-SLF4J - 
   https://git.dorkbox.com/dorkbox/MinLog-SLF4J
   https://github.com/EsotericSoftware/minlog
   Copyright 2008 - BSD 3-Clause License
     dorkbox, llc
     Nathan Sweet
     Dan Brown
   Drop-in replacement for MinLog to log through SLF4j.


 - SLF4J - 
   http://www.slf4j.org
   Copyright 2008 - MIT License
     QOS.ch