Zoop is an object oriented framework based on a front controller. It is designed to be very fast and efficient and very nice for the programmer to work with. It is easily extensible, and you need only include the functionality you use. It features GuiControls (a PHP implementation of .net's webcontrols), AJAX support and integration, automatic form validation and creation (including db integration), a Smarty templating system, PDF creation, session handling, and SMTP template-based email sending.
With Plomino, you can create your own specific applications in your Plone site directly from the Plone Web interface without Plone development. You can create and design forms in WYSIWYG mode. You can easily embed charts or maps. You can create specific actions. You can adapt the application behaviour based on the user access rights and roles in a very granular way. You can import/export your application structure and/or your application data over HTTP between remote servers.
Hivurt is a content management system powered by a component architecture. It gives you the strength of Zope 3 in an easy to use environment. It allows you to easily switch between ZODB and PostgreSQL data storage and features search and indexes, an easy editor UI, front-end skins, and localization and internationalization. Existing data stored inside an RDBMS can easily be accessed as Zope objects.
z3ext is a CMS framework that builds on top of Zope3. It supports a number of modules out of the box, like eg. a blog. It supports OpenID, caching, jQuery, and a host of other features. It has blogs and forums, content management, site administration including menu tabs and portlet management, intelligent content spaces that contain workspaces (much like Clearspace from Jive Software), project management with milestones and tasks, member and group management, and customizable member profiles. Standard content types include: files, images, documents, news, events, audio, video, and photos. Also included are banner management (top of page, bottom of page, and area below header) with rotating banner content, email notifications, RSS, and a desktop client (Adobe Air Touch).