Proceedings of the twelfth ACM SIGPLAN workshop on Erlang

It is our great pleasure to welcome you to the Twelfth ACM SIGPLAN Erlang Workshop -- Erlang'13. This year's workshop continues the tradition of being co-located with the annual International Conference on Functional Programming (ICFP), and being a forum for the presentation of research efforts and experience reports on all aspects of theory, implementation and mapplications of the Erlang programming language. The call for papers attracted a total of 15 submissions, each reviewed by at least three program committee members. The program committee accepted 9 of those submissions as full papers, and 3 as poster presentations. In addition, the program committee invited a keynote presentation by Justin Sheehy, a primary innovator behind the popular Webmachine and Riak open source Erlang systems. Also, the program once again includes a brief talk session to provide opportunities for all participants to introduce themselves, present work in progress or wild ideas, and share their Erlang interests.