Cheetah comes ``batteries included'' with libraries of templates, functions, classes and other objects you can use in your own programs. The different types are listed alphabetically below, followed by a longer description of the SkeletonPage framework. Some of the objects are classes for specific purposes (e.g., filters or error catchers), while others are standalone and can be used without Cheetah.
If you develop any objects which are generally useful for Cheetah sites, please consider posting them on the wiki with an announcement on the mailing list so we can incorporate them into the standard library. That way, all Cheetah users will benefit, and it will encourage others to contribute their objects, which might include something you want.