At about four days ago, I started studying the Apache MINA framework. I particularly found it very interesting, but soon I noticed that the study material was incomplete. What I looked in the "user guide" site, I saw that it appeared to be outdated, mixing two libraries MINA 1.x to 2.x. It's been a while since I've seen a topic on the internet with a more current date. I've been researching and I think that makes about 1 year since MINA was updated.
My questions are:
Was the project was abandoned?
If so, what other project you readers and fellow programmers recommend, which has features like MINA?
If not, how could I talk to the designers? I tried to register by e-mail when they talked about "subscribe", but I could not. Actually, I got an error saying that my email could not be sent, even though I checked and corrected the shipping address.