Mod Snake has been tested with Apache 1.3.12, 1.3.14, and 1.3.17. Since Apache 2.0 is still in a pre-beta stage, its API is continually changing. Mod Snake development is currently matched against the CVS versions of Apache 2.0. Each version of mod_snake should coorespond to a publicly released version of Apache, such as Apache 2.0a9.