BitNami

​bitnami.org provides native installers, virtual machines and Amazon cloud images for popular web applications, including Trac. Each one of the available "stacks" includes everything necessary for having a complete installation up and running in minutes. They are available for Linux, Mac OS X and Windows. All of the stacks are freely available and can be used for both development and production purposes.

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.

Combining one of the ​Trac Amazon images with the ​Amazon Free Tier it is possible to host a small server running Trac in the cloud completely for free. BitNami also offers a commercial service, ​BitNami Cloud Hosting, that provides monitoring, backup and management services for instances hosted in the Amazon cloud, that supports Trac and that also has a free tier.