LDAP User Folder
The product with the longest tradition, this Zope user folder replacement has been under active development since 2001. If you want to authenticate visitors to your Zope-based site using a LDAP directory server this is the product you need. See the LDAP User Folder page on dataflake.org for details and downloads.
MaildropHost
The MaildropHost replaces the standard Zope MailHost object, used to send Email out of Zope, with a more scalable version. MaildropHost decouples the creation and formatting of email messages from the act of sending, which is done from a separate process, to remove the annoying delay seen by site visitors when a MailHost is sending mail. Another important feature, transaction-awareness, prevents the symptom of multiple identical emails caused by Conflict Errors seen all too often on busy sites with the standard Zope MailHost. Download the product and find out more on the MaildropHost page.
JTracker
Tired of overcomplicated issue trackers that get in the way by imposing their own policies and design on your site? Take a look at the JTracker instead if you care about getting your work done instead of fiddling with esoteric settings.
File Cache Manager
This newest package, in concert with noted Zope developer community members Chris McDonough and Paul Winkler, provides Squid cache-style caching of content on disk. The File Cache Manager plugs into the Zope ZCacheable API which means it is automatically compatible with most standard Zope content. It provides an alternative to caching content in memory and to deploying a standalone cache server.