Detailed Comparison

Both are based on the ZODB.  Zope 2 hid the fact that ZODB is a graph database.  Zopache embrasses graphs, choice lists can be from another branch of the tree.  You can even have choice tree lists!

Zope 2 was a server side only framework.  It included no Javascript.  Zopache has rich Javascript libraries that enhance the whole experience.  

For web development, Zope 2 had a clunky DTML object with a static text area.  Zopache has gorgeous application specific editors for HTML, CSS, Javascript, and with more to come.  Think Jade, Markup, Restructured Text. 

Zope 2's acquisition was a bit promiscuous.  In a single HTTP request, you could walk down multiple branches of the tree and acquire anything you want.  Maybe this was as security hole.  Certainly it made debugging more difficult.  Zopache just allows you to walk down one branch of the tree.  You can  acquire Templates and images from the ZClass or Parent Class.  Much easier to understand and debug. 

Both have a model of ZClasses.  The Zope 2 model was a bit restricted.  You could not change the parent class of a ZClass.  And there were no instance or class variables, just rather odd property sheets.  Zopache ZClasses have proper class and instance variables.  Zopache supports multiple inheritance. 

Zope 2 is older and more mature.  It has rich libraries of add ons.  Some of which conflict with each other.  Zopache has much richer objects, but way fewer of them.  

Zopache employs performance enhancements .  You can load a whole branch of the tree in a single disk access.

Zope 2 was open source software.  You had to be a Unix geek to install and run it.  Zopache is hosted software.  Easy for anyone to use.    

Zope 2 supported python scripts, which were a huge security hole.  Zopache will be supporting  a secure, ininite loop resistant templating language and ZTK spacesuits to provde a secure but productive environment. 

Zopache is built on top of Grok and ZTK.  Great Technology.  I can do whatever I need to do with them.  It is easy to turn Zopache into a JSON database.  It is easy to add new content objects.  Zope 2 TTW was a bit limiting. 



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