You may be licensed to use source code to create compiled versions not produced by Mattermost, Inc. in one of two ways:

  1. Under the Free Software Foundation’s GNU AGPL v3.0, subject to the exceptions outlined in this policy; or
  2. Under a commercial license available from Mattermost, Inc. by contacting commercial@mattermost.com

This really seems like a dual license situation where they are saying "Let's encourage Open Source, but if you want to just use our work to make yourself rich and not even acknowledge you're using us then fuck you, pay us."

I expect this to become more common as companies routinely infringe on OSS licenses while simultaneously many companies are hesitant to use OSS because of licenses. This at least gives an out for the good actors and allow devs to make money (other than being reliant on donations, because... that's worked out...).

But maybe I'm misunderstanding? If so, I don't know what I'm missing