BitNami

​bitnami.org provides:

Free, easy to setup wikis, blogs, forums and many other web applications that you can run locally or in the cloud. BitNami makes deploying server software a simple and enjoyable process.

Among the many self-contained "stacks" as they call it, there's a ​Trac stack which makes installing Trac with Apache and Subversion a no-brainer, especially on Windows where such a combination is often perceived as hard to get right. There are also vmware virtual machines and Amazon EC 2 Trac cloud images.