Magnolia 2.1 is available in two different packages:
Expert developers might prefer to download the war files. Magnolia requires a servlet 2.4 compatible servlet container and a 1.4 level jre/jdk (depending on the server requisites) in order to run properly. The suggested server is Apache Tomcat 5.x.
Nightly builds are available as a single war (configured as an admin instance). You can install this war just like the ones in the 2-war files distribution. This install guide will show you how to change the configuration of a war and how to make multiple magnolia instances live in the same application server.