Hello,
the first committed module in 2012 is app_mono, which offers embedded execution of manage code (e.g., C#/.NET) via Mono project (http://www.mono-project.com/).
The readme of the new module is available at:
* http://kamailio.org/docs/modules/devel/modules/app_mono.html
Current API which exported by SIP server for usage in C# application is documented at:
* http://www.kamailio.org/wiki/embeddedapi/devel/mono
Besides C#, app_mono should be able to run managed code compiled from applications written in other languages such as VisualBasic.NET, Java, Java Script, Python, ... more are listed at:
* http://www.mono-project.com/Languages
A primary use is integration with several widely used Microsoft technologies and APIs, for example C# having up-to-date libraries to connect to Active Directory LDAP service or MS SQL Server.
Happy 2012, Daniel