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.

Along the many self-contained "stacks" as they call it, there's a ​Trac stack which makes installing the Trac/Apache/Subversion a no brainer, especially on Windows where such a combination is often perceived as hard to get right.