For years I have hosted an updated copy of the Zope Book (2.7 edition) and from what I gather from my webserver logs it's still in pretty heavy usage. That said, as may be evidenced by the version number (Zope 2 is at version 2.12 now), I have ceased maintaining it. It needs a new home. Are you looking to adopt it?
By the way External Editor also still requires a maintainer too.