To clarify, OWASP is a community of projects, chapters, and conferences that support application security.
As application security is a generic concept, most of the resources available from OWASP are universally applicable. There are some language specific focus groups (such as the .NET Project and the
Java Project) as well as language specific libraries such as ESAPI (which has ports in a variety of programming languages).
But by and large, the documentation projects are generally technology neutral (though they may provide code snippets in a particular language for example purposes).
-Jason
OWASP Global Projects Committee Chair