This is a compilation of information from Awesome Wagtail, Can I Use Python 3?, and pypinfo to determine the state of Wagtail's third-party plugins ecosystem with respect to Python 3 support.
Is a package missing? Add it to Awesome Wagtail and it will be reflected here shortly.
Is Python 3 support info inaccurate? Update the package's classifiers, and-or add an override in this list.