PageWork is a wiki that focuses on fast content delivery as well as an expandable and adaptable code library. It explicitly separates the volatile run-time environment of a hosted site from the encapsulated code library, and has the ability to host multiple sites based on the same software. All pages and files undergo revision control of arbitrary depth. In combination with users and groups, access to resources is controlled by ACLs that resemble Unix permissions. Features include tagging, SEO, media and meta data management, comments, breadcrumbs, bookmarks, templates, memos, Atom/RSS feeds, adaptable resource caching, and site-wise and personal customization.