In short, from permeissive to restrictive are MIT, BSD3, Apache, and GPL. MIT is good for personal projects while GPL is better for serious company projects.

As I recently reviewed my Spring 2020 Student Rating of Teaching (SRT) results, it inspired me to contemplate deeply on how I can better support and assist my students. This reflection is not just an evaluation of past teaching but also an open sharing of my thoughts and teaching philosophy.

Cited from John D. Cook