Zope 3 is the next major Zope release and has been written from scratch based on the latest software design patterns and the experiences of Zope 2.

Cleanup of the Zope 3 packages has continued to ensure a flexible and scalable platform. We continued the work on making the transition from Zope 2 to Zope 3 by making Zope 2.10 use even more of the Zope 3 packages. But we're not there yet. You can't run Zope 2 applications in Zope 3.

Downloads

http://zope.org/Products/Zope3

Installation instructions for both Windows and Un*x/Linux are now available in the top level README.txt file of the distribution. The binary installer is recommended for Windows.

Zope 3.3 requires Python 2.4.1 to run. You must also have zlib installed on your system.

Most Important Changes Since 3.2

• Provided a new component registry API that allows multiple component registries to be combined more flexibly than before. See zope.component.interfaces.IComponentRegistry for more information.
• Greatly simplified local-component registration. See zope.component.interfaces.IComponentRegistry for more information.
• Moved many packages out of zope.app to make them easier to use outside of Zope.
• Change the session credentials plugin to make it configurable in which fields it looks for the credentials.
• Added a new API for collating text. You can now adapt a locale to zope.i18n.interfaces.ILocales.ICollator. You can then use that to sort strings, such as menu entries, in a locale-specific fashion.
• A new zope.annotation.factory helper function that makes it easier to create annotations. Also added a README in zope.annotation which explains how to use it.
• Added a more complete set of widgets for fields that use iterable sources. These widgets now mirror the set provided by vocabulary-based fields.
• Added a cleaner and more robust API to testbrowser for setting file-upload data.
• Deprecated several ZCML directives:
  • factory
  • vocabulary
  • content (as an alias to the class directive)
  • modulealias
  • renderer:renderer
• The browser:layer directive and the ILayer interface has been deprecated. Registering layers has become obsolete, layers should be created as interfaces extending IBrowserRequest.
• The browser:skin directive has been deprecated. Skins should be created as interfaces extending IBrowserRequest and can be registered using a simple utility directive.
• The ISkin interface has been renamed to IBrowserSkinType.

For a complete list of changes see the CHANGES.txt file.

Resources

• Zope 3 Development Web Site
• Zope 3 Dev Mailing List
• Zope 3 Users Mailing List
• IRC Channel: #zope3-dev at irc.freenode.net

Acknowledgments

Thanks goes to everyone that contributed.

Enjoy!

The Zope 3 Development Team