Free/Open alternative to MS Sharepoint?

[Travis Roy]

>
> Hi all,
>
> Is anyone aware of an open/free alternative to MS Sharepoint Portal
> Server?  Or, to re-phrase, is anyone aware of a web-based
> documentation control system which will run under Apache, and has the
> capability of allowing files to be checked in/out (considering that
> MS Office docs would be considered a binary format :(

http://drs.sourceforge.net/
---------------------------
The Document Repository System is a system of managing documents within an
organization. It works with a Frontpage Web (which, at this time, is
required for the document repository to work, though I am planning on
making Frontpage optional sometime), so that Windows clients can
seemlessly save their work to the repository directly from Office (though
with the check-in/check-out system, almost any browser/operating system
can use DRS). The program itself, though, is geared to run on a Linux
server with Frontpage Extensions installed on Apache. It is programmed in
PHP, and has many features other than just a document repository,
including: forums, announcements, tasks, calendars, event management, user
administration, etc...


http://docindex.sourceforge.net/
--------------------------------
Docindex is a system that sits on top of one or more version control
systems and provides web-based searching, indexing, and retreival of the
content.

Docindex initially supports multiple CVS repositories, but it is
structured to accomodate mixtures of multiple version control systems.

Docindex requires Perl, Mysql, and a web server (apache).

Features:

- Indexing of multiple version-control repositories according to keywords,
title, and abstract.
- Access control via hierarchically defined groups.
- Distinct group permissions on each document record for searching and
retreival. A single record can offer differrent files or differrent
versions of a single file and can restrict specific entries to specific
groups.
- User validation is performed by webserver. Access control is rechecked
at each stage of processing.

http://www.melonfire.com/community/columns/trog/article.php?id=64
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To much on the website to post here

http://sdms.cafuego.net/
------------------------
SDMS is an open-source system that allows you to store any document in a
database via a bunch of webpages.

That was the short description, now comes the long one. SDMS uses PHP to
provide you with a pretty interface to a MySQL server that allows you to
store and retrieve documents and to share those documents between users.

In addition, the system uses ACL (Access Control Lists) to grant access
rights to documents on a per-user basis.

So what is all this good for? Well, it for instance allows you to
distribute project documentation on a need-to-know basis, whilst keeping a
central repository of documents that is accessible to all team members and
easy to manage.