If I hear about Actor model, the first thing that comes to my mind is the popular Open Source library Akka.
I feel very connected to Akka, probably because I learned it at the university with Java and Scala, and then I landed my first Game Dev job using it on the backend... so many good memories!
Lightbend, the company owning Akka, recently shared a blog post signed by the CEO announcing a license change from Apache 2.0 to Business Source License 1.1, a proprietary license. You can already find it in this PR, merged a couple days ago.
Old versions will still be free, but future updates will require licensing for commercial use before 3 years, a time window after which the written code goes back to Apache 2.0.
What do you think about this license change? Should FOSS ever do that, applying a more restricting license, after the free contributions from the community over the years? Let's discuss!
I suggest you these good readings to get more insights: