Nano is excellent in many ways, though it's not a successor, that's just bombast from its author. ZeroMQ is far more than a library. It is a large community and hundreds of projects, e.g. independent ZeroMQ versions in Java, .Net, C++, Erlang, C. Nano is one library and bindings.
Take a look at the git repositories and the email list and you really see the significant differences. These aren't technical. They're why the ZeroMQ community merges pull requests rapidly, and products tend to be stable on master, while Nano has pull requests hanging for months, and isn't stable.
Nano should have been compatible with ZeroMQ, then it would have been a successor and the protocols could have evolved over time to become what Sustrik wanted. Instead it tried to define itself by one-upping ZeroMQ, missing many opportunities. ZeroMQ has so much stuff built on top. Nano? So little.
This is not accidental or random. The ZeroMQ community is welcoming to people, and every effort is welcome, unless it's really disruptive. Nano is just a the wrong side of hostile, arrogant, and insecure and it shows in the arguments on the mailing list (which we just don't get on zeromq-dev).
Edit: by "not stable", I refer to its "0.5 beta" status, not any technical instability. The point being there is no guarantee of forward compatibility.
Take a look at the git repositories and the email list and you really see the significant differences. These aren't technical. They're why the ZeroMQ community merges pull requests rapidly, and products tend to be stable on master, while Nano has pull requests hanging for months, and isn't stable.
Nano should have been compatible with ZeroMQ, then it would have been a successor and the protocols could have evolved over time to become what Sustrik wanted. Instead it tried to define itself by one-upping ZeroMQ, missing many opportunities. ZeroMQ has so much stuff built on top. Nano? So little.
This is not accidental or random. The ZeroMQ community is welcoming to people, and every effort is welcome, unless it's really disruptive. Nano is just a the wrong side of hostile, arrogant, and insecure and it shows in the arguments on the mailing list (which we just don't get on zeromq-dev).
Edit: by "not stable", I refer to its "0.5 beta" status, not any technical instability. The point being there is no guarantee of forward compatibility.