Free sharepoint portal server 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

The Linux Virtual Server is a highly scalable and highly available server built on a cluster of real servers, with the load balancer running on the Linux operating system.

The architecture of the server cluster is fully transparent to end users, and the users interact as if it were a single high-performance virtual server.

The basic goal of the Linux Virtual Server Project is to:
- Build a high-performance and highly available server for Linux using clustering technology, which provides good scalability, reliability and serviceability.

Apache Portals is a collaborative software development project dedicated to providing robust, full-featured, commercial-quality, and freely available Portal related software on a wide variety of platforms and programming languages.

This project is managed in cooperation with various individuals worldwide (both independent and company-affiliated experts), who use the Internet to communicate, plan, and develop Portal software and related documentation.

Modern software is complex and expensive, which has motivated many companies to invest in enterprise portals as a mechanism by which they can manage information in a cohesive and structured fashion.

Portals offer many advantages over other software applications. First, they provide a single point of entry for employees, partners, and customers. Second, portals can access Web services transparently from any device in virtually any location. Third, portals are highly flexible; they can exist in the form of B2E intra-nets, B2B extra-nets, or B2C inter-nets. Fourth, portals can be combined to form a portal network that can span a companys entire enterprise system, allowing for access both inside and outside the firewall.

Portals have many advantages, which is why they have become the de facto standard for Web application delivery. In fact, analysts have predicted that portals will become the next generation for the desktop environment.

Portals distinguish themselves from other software systems because they provide the ability to integrate disparate systems and leverage the functionality provided by those systems. As such, they are not mutually exclusive, and do not force you into an either-or decision vis-a-vis existing software systems. This point is of paramount importance, particularly when you consider the fact that Web services are destined to fuel the explosion of Web applications. Since portals can access any Web services, the conclusion is inescapable: portals provide a unique opportunity to leverage the functionality of nascent technologies as well as mature, well-established software systems.

SchoolAlumni Portal project is a Web portal for a high school alumni site.
It features a content management system and online news publishing tools.
It can create an unlimited weblink category, publish articles with images, run an alumni list with edit-delete-update features, provide a forum, provide classified ads, and more.
Enhancements:
- You can now log out from two places; if you are logged in as the admin you can logout from the admin screen, and you can logout a user from the main list page.
- If you click on edit while viewing someone elses record, and you are logged in, you will get your record, otherwise you will be prompted to login.

Streamnik Server project is an IPTV server based on the open codecs Ogg/Vorbis and Ogg/Theora. It can stream a number of different channels and is optimized to run on leased (virtual) servers. The program schedule is defined by an SQL database table and can be changed at runtime.

Evolution Data Server provides a single database for common, desktop-wide information, such as a users address book or calendar events.

Evolution Data Server is also a dependency of the clock applet from the gnome-applets package, 2.10 release.

Evolution provides integrated mail, addressbook and calendaring functionality to users of the GNOME desktop.

kraskarta is an interactive map engine. It is based on Macromedia Flash technology with server scripts written in Perl with a PostgreSQL database.
kraskartas features include the ability to search for a street and address, for a bus route, and for information about objects.
Enhancements:
- This is the first open release after being proprietary code.