where to find Plugin license

Hello all.

When using WordPress plugins I generally only want to use open-source / copyleft code.

Even though many plugins are free it’s not always clear what their code’s license status is. I kind of would expect to see this on the right along with:

Version:
Author:
Last Updated:
Requires WordPress Version:
Compatible up to:
Active Installations:

Etc…

Is there anywhere reliable where this is listed for all plugins, or how would one go about finding the license without having to scavenge through the creator’s website for hints?