Perl::
http://search.cpan.org/search?query=AnyEvent::I3
Python::
- http://github.com/thepub/i3ipc
- http://github.com/jzib/i3-py (includes higher-level features)
+ https://github.com/whitelynx/i3ipc
+ https://github.com/ziberna/i3-py (includes higher-level features)