Free plone software for linux

Plone is an out-of-the-box ready content management system that is built on the powerful and free Zope Application server.
Plone CMS requires minimal effort to set up, is deeply flexible, and provides you with a system for managing web content that is ideal for project groups, communities and intranets.
Plone is a content management framework that works hand-in-hand and sits on top of Zope, a widely-used Open Source web application server and development system. To use Plone, you dont need to learn anything about Zope; to develop new Plone content types, a small amount of Zope knowledge is helpful, and it is covered in the documentation.
Zope itself is written in Python, an easy-to-learn, widely-used and supported Open Source programming language. Python can be used to add new features to Plone, and used to understand or make changes to the way that Zope and Plone work.
By default, Plone stores its contents in Zopes built in transactional object database, the ZODB. There are products and techniques, however, to share information with other sources, such as relational databases, LDAP, filesystem files, etc.
Plone runs on Windows, Linux, BSD, Mac OS X, and many other platforms; easy click installers are available for Windows and Mac OS X, and RPM packages are available for Linux. For full information, see Download.
Main features:
- Plone is easy to install. You can install Plone with a a click and run installer, and have a content management system running on your computer in just a few minutes.
- Plone is easy to use. The Plone Team includes usability experts who have made Plone easy and attractive for content managers to add, update, and mantain content.
- Plone is international. The Plone interface has been translated into over 20 languages, and tools exist for managing multilingual content.
- Plone is standard. Plone carefully follows standards for usability and accessibility. Plone pages are compliant with US Section 508, and the W3Cs AAA rating for accessibility.
- Plone is Open Source. Plone is licensed under the GNU General Public License, the same license used by Linux. This gives you the right to use Plone without a license fee, and to improve upon the product.
- Plone is supported. There is close to a hundred developers in the Plone Development Team around the world, and a multitude of companies that specialize in Plone development and support.
- Plone is extensible. There is a multitude of add-on products for Plone to add new features and content types. In addition, Plone can be scripted using web standard solutions and Open Source languages.
- Plone is technology neutral. Plone can interoperate with most relational database systems, open source and commercial, and runs on a vast array of platforms, including Linux, Windows, Mac OS X, Solaris and BSD.

Plone2PDF is a Plone product which exports various types of Plone documents to a pdf document.

The goal of this product is to add a plone action to export Plone documents to the PDF format.

Architecture
The products needs HTMLdoc to make the conversion to PDF.

Status
The status of this product is still beta (version < 1.0). Comments, patches etc. are welcome.

Plone Epydoc offers a product which lets you generate API documentation for any product on your Plone site.

Plone Epydoc (qPloneEpydoc) is a Plone product which lets you generate API documentation for any product on your Plone site. qPlonEpydoc is build on Epydoc and uses it to generate API documentation based on docstrings.

PloneExFile provides a Plone/AT content type with an attachment, supporting preview & indexing & lock.
PloneExFile is a file like content type that provides indexing and preview support for MS Word, MS Excel, MS Powerpoint, PDF and OO Writer files.
Works with:
- Plone 2.5
- Plone 2.1
Enhancements:
- Added German translations and fixed description of upgrade procedure; provided by Carsten Kirck. Thank you!

Plone Comments provides a product developed to improve moderation of comments in Plone.
Main features:
- Notify admin about comment posted
- Moderation of comments, approval of comments
- Anonymous commenting
- Added Name field to comment form, it is required for anonymous comments
- Article author can be notified about new comment after the approval by reviewer
- List of recent comments for more comfortable moderation
- Configlet that allow:
- Turning on/off Moderation
- Turning on/off Manager notification
- Turning on/off Editor notification
- Turning on/off Anonymous Commenting
- Configure admin e-mail for notifications
- Configure notification subject
Comments moderation is implemented with involvement of two stage workflow. Comments are created in "private" state and visible only to DiscussionManager group of users.
To differentiate between logged-in (registered) commentors and Anonymous commentors that pretend to be one person or other one, we use Boldness of name. The Comment author is in bold when posted by logged in member. The names provided when posting Anonymously are in plain text.
Notification subject control allows to enter custom prefix to disctinct nofifications comming from different sites.
Usage
One of possible UseCases:
- Moderation is enabled and authors notification is turned on.
- New comment posted in private state.
- Notification is sent to the emails entered in Plone Comments configlet.
- Moderator User with DiscussionManager role see the comment.
- The comment can be deleted or published on modaration stage.
- When comment is published notification is sent to Article Editor.
Enhancements:
- Ukrainian translation added
- added qPloneCaptchas-1.0 integration/compatibility
- fixed reinstall procedure

PloneiCalendar allows you to share and browse calendar files in Plone, and manage them in your calendar application.
PloneiCalendar is a product designed by Ingeniweb to handle calendar files in Plone. It is based on the iCalendar file format.
Once an PloneiCalendar is created in Plone, you can share it with other users or groups (you can give read or write permissions), browse it by day, week and month or modify it by using standard calendar applications like Mozilla Calendar or Apple iCal (or Ximian Evolution or KOrganizer or whatever you want - may be even Microsoft Outlook ;) ).
Main features:
- Upload and download your calendars in Plone
- Give permissions to users or groups to view/modify your calendars
- Browse your calendars by day, week or month
- Instantly find all your calendars with the included portlet
- View the event details
- All-day events and most recurring events are supported
- Handling of simultaneous events, even in complex cases (see screenshot)
- Handling of i18n date formats (currently, english and french formats can be displayed)
- Cool looknfeel : color integration with your plone site, personalization of the color of your calendars, 100% pure CSS in the calendar views (no table used)