At the time this edition was prepared, Apache 1.3.26 was the stable release. It has an improved build system (see the section that follows). Both the Unix and Windows versions were thought to be in good shape. Apache 2.0 had made it through beta test into full release. We suggest that if you are working under Unix and you don’t need Apache 2.0’s improved features (which are multitudinous but not fundamental for the ordinary webmaster), you go for Version 1.3.26 or later.