[mato]

If you want more background to what led up to our fork of ZeroMQ, read the flamewar on zeromq-dev from February carefully hidden in a "C++ assertion" thread at http://lists.zeromq.org/pipermail/zeromq-dev/2012-February/0..., or from http://lists.zeromq.org/pipermail/zeromq-dev/2012-February/0... which relates directly to the trademark question.

[DennisP]

I noticed there's a compatibility library with 0mq. What are the technical changes that require a compatibility library?

This seems to imply there are API differences, rather than just the same code with different development policies going forward.

[obtu]

The compatibility configure flag seems to be used to also install the crossroads library as libzmq.so.