<p>Plone is a powerful, flexible, open source Content Management System (CMS) built on top of Zope application server and CMF.</p><p>Features:
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- Flexible and adaptable workflow
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- Customisable
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- Free add-ons
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- Versioning, history and reverting content
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- Support for multiple mark up formats
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- Multilingual content management
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- RSS feed support
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- WebDAV and FTP support
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- WYSIWYG
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- Integrates with Active Directory, Salesforce, LDAP, SQL, Web Services, LDAP and Oracle</p>