Official supported support statement (applies unless otherwise stated on each plugin):
We support Xojo 2016r4 and later (up to date of the publishing of each plugin). Older versions will often work with our plugins but we do not support it officially or test for it in any way. (Some plugins may require newer version of Xojo)
We support MacOS X 10.9 and later, Windows 2012 Server, Windows 7 and Linux systems per the specs published by Xojo Inc. Plugins will often work for other systems outside of those specs, but we do not support it officially nor test for it in any way.
EDN (Einhugur Developers Network library)