Free sharepoint portal server 2003 software for linux

iConnect Portal Server is a data presentation and delivery system for building enteprise portals over the iConnect Web Application Server.
Users of the platform have a customized single point of access to the companys information system and resources.
Main features:
- Grid / slots / blocks logic
- Modular structure
- Encapsulation of pages, blocks and classes inside modules
- Separation between view and model
- PHP as template engine
- Localized templates
- Grid themes
- Sessions

Metadot Portal Server is a leading open source portal system. Its revolutionary ease of use allows non technical people to create very powerful websites and portals just with the clicks of a mouse. Its architecture makes it extremely easy to customize and deploy.
Metadot Portal Server is available for free under the GNU General Public License (GPL). It provides collaboration, content management, as well as My News Page (like My Yahoo) and online database applications. Typically it is used to create web portals, intranets, extranets, organization and project websites.
When it was first released in April 2000, it revolutionized the way complex websites are built by giving easy-to-use tools to non-technical users allowing them to create powerful database-backed websites without having to involve a webmaster or the IT department!
It runs primarily on Linux, Apache, MySQL and Perl and supports Sun Solaris, Windows OSes and Oracle database.
Main features:
- Discussion Forum
- File and Content Management
- Task / To-Do List
- Calendar
- Poll
- FAQs
- User Personal Website
- Group and user-based access control
- My News Page - like My Yahoo
- Email Notifications
- URL management
- Rich text Editor (from interactivetools.com)
- Site themes and templates
- and many more features!
Enhancements:
- Fixes problems where certain Windows-based upload paths would not work correctly.
- Fixes a problem with the aggregated calendar Gizmo.
- Fixes problems with email processing that could cause all discussions and RSS feeds to stop working.
- Fixes a problem with the built-in search that could cause it to never finish processing.

Collaborative Portal Server (CPS) is the most complete Open Source solution available for building ECM applications.
CPS comes also as a user-friendly application for entreprise-grade content management with many collaboration features.
CPS is the collaborative web content management solution for Zope.
CPS is built on top of the powerful Zope application server.
This web portal aims at unifying and providing a common platform to the CPS community.
CPS is backed by Nuxeo and a community of contributors (Chalmers University, Infrae, etc.) and is released under the GPL.
CPS is an extensive collaborative Web content management system (CMS) implemented on top of Zope and the CMF, that enables organizations to easily, quickly and efficiently implement collaborative portals (intranet, extranet or internet) and workflow- oriented business applications.
Main features:
- Collaborative work and publication spaces (you may need to be authenticated with the right access level to access these URLs)
- Document versionning, that allows a document to be published in one version and still worked on in another one
- Group-based, directory-backed user and roles management
- A configurable Portal interface, with a web- and accessibility-standards compliant default look and feel (you will need to be authenticated with the right access level to access this URL)
- Notifications on many kinds of events happening on the system
- An (optional) WYSIWYG editor for portal look and feel (just install CPSSkins in your CPS instance using the ZMI)
- Many user-level services, like a Webmail, Forums, shared Calendars, Newsletters and Mailing Lists, etc.
- Many powerful developers- and webmaster-level services, including support for creating your own document types, your own workflows, etc.

Darwin Calendar Server provides a CalDAV server.

The Darwin Calendar Server is a standards-compliant server that allows multiple users to collaboratively share calendaring information. It provides a shared location on the network to store schedules, and allows users to send each other and manage invitations.

In order to provide interoperability with multiple calendaring clients, the server implements the CalDAV protocol, which is an extension of WebDAV, which is in turn an extension of HTTP.

Collaborative Portal Server (CPS) is the most complete Open Source platform available for building Enterprise Content Management (ECM) applications.
Collaborative Portal Server comes also as a user-friendly application ready to for entreprise-grade content management with many collaboration features. CPS is built on top of the powerful Zope application server.
This web portal aims at unifying and providing a common platform to the CPS community. You will find here news about CPS and its components, documentation, links, users and developers mailing-lists and information about the future of the platform.
CPS development is backed by Nuxeo and a community of contributors (Chalmers University, Infrae, etc.) and is released under the GPL.
Enhancements:
- This release contains mostly bugfixes and minor improvements.
- A couple of new packages, useful for application developers, have been also integrated: CPSDashboard (a tool to build flexible and easily configurable search results views) and CPSBayes (a tool to perform naive Bayesian inference).

Campus Chat Server project is a chat server intended for use in the Cadiz University campus network.
Enhancements:
- hash_maps are now used instead of maps, so the cost of lookup or insertion is O(1) in the average case, instead of O(logn).

OpenSharePoint is an intra/extranet portal server similar to SharePoint.
OpenSharePoint project provides a place on the Web where a team can communicate, share documents, and work together on a project.
A separate team Website can be created for every project that is being worked on.
OSP is alternative groupware that provide a place on the web where your team can communicate,share documents and work together.You can contribute to the team website using nothing more than a web browser!, OSP provide more tool to communicate like News, Forum, Webbase E-Mail and etc. You can install new modules/block with easy way via using your web browser.
Enhancements:
- Installation problems were fixed and the core APIs were updated.

lisp-network-server is a simple framework for writing Common Lisp network applications.

lisp-network-server framework takes care of listening on the network, accepting the connection and starting a new thread with handler functions of your network aware application.