Free in collaboration software for linux

OfficeSpot.Net CS contains following packages: - eGroupWare - OpenLDAP - DBMail - ClamAV - APC - Memcache - MySQL
Enhancements:
- This release contains updated versions of eGroupWare (1.4), DBMail (latest stable SVN revision), and ClamAV (0.90.3).
- The installation process was streamlined and the online documentation was updated.

eGroupWare is a multi-user, web-based groupware suite developed on a custom set of PHP-based APIs.
Main features:
- email
- addressbook
- calendar
- infolog (notes, to-dos, phone calls)
- content management
- forum
- bookmarks
- wiki
Version restrictions:
- EGW does not need to be compiled. EGW is composed only of PHP, HTML and image files
- EGW needs a Database server. MySQL or PostgreSQL or MSSQL preferred. Can be local or remote.
- EGW needs a php4 enabled web server. Apache1.3.x with PHP4.3.x preferred.
- EGW may need an e-mail server. Can be local or remote and IMAP or POP.
- Please read the requirements and install-how-to in the download area.
Enhancements:
- addressbook completly rewritten (Group-addressbooks, Organisation-views, improved LDAP support)
- new fully integrated tracker application used by the project itself since some time
- new imap backend and many improvments for FMail
- Gallery2 port for eGroupWare
- many improvments in nearly all applicatons

Zimbra Collaboration Suite project is a client/server technology for enterprise messaging and collaboration.
Zimbra delivers innovation for both the administrator and the end-user as well as compatibility with existing infrastructure and applications (both open source and proprietary).
The Zimbra Collaboration Suite provides support for email, contacts, and group calendaring, and consists of a server and client.
Main features:
Administrator Benefits
- Online move, backup and recovery of individual or a group of mailboxes
- Compatibility with Active Directory and existing LDAP directories
- Native hierarchical storage management and clustering
- Web services integration with existing enterprise applications
- Integrated anti-spam and anti-virus
End-User Benefits
- Browser based client with search, shared calendar and mail that is integrated with contacts and calendar
- Support for Outlook: calendar, mail, contacts and offline mode
- Support for mobile devices: Blackberry, Treo and etc
- Support of Windows, Apple and Linux computer.
Whats New in 5.0.0 Beta 1 Development Release:
- This is the first release in the 5.0.0 release cycle.
- New features include IM, Tasks, Standard Client autocompletion, and keyboard navigation.
- Updates have been made to migration wizards and apple/outlook connectors.
Whats New in 4.5.6 Stable Release:
- Support for an automated MySQL database corruption check that will send a notification to the admin.
- Spam training has been enhanced by allowing programmatic scanning of folders without requiring a password.
- Admins can get backup and restore complete notifications sent via email.
- .Doc and .pdf files open correctly in Zimbra Web Client.
- iSync will not duplicate the calendar, and iSync Connector works correctly with Mac OS X 10.4.10.
- Servers automatically start after a ZCS upgrade.
- Web-based cross-mailbox discovery is available for the optional Zimbra Archiving and Discovery module.

activeCollab project is an easy to use, web based, open source collaboration and project management tool. Set up an environment where you, your team and your clients can collaborate on active projects using a set of simple, functional tools. 100% free!
Main features:
- Easy to install and easy to use
- Web-based. After installation only thing youll need to use it is web browser
- 100% open source, 100% free
- No limitations on number of projects, clients, team members...
- Per project permissions

PhiloLogic is the primary full-text search, retrieval and analysis tool developed by the ARTFL Project and the Digital Library Development Center (DLDC) at the University of Chicago. PhiloLogic is a Free Software implementation of PhiloLogic for large TEI-Lite document collections.
The wide array of XML data specifications and the recent deployment of basic XML processing tools provides an important opportunity for the collaborative development of higher-level, interoperable tools for Humanities Computing applications. The sophistication and power of the TEI-XML encoding specification supports the development of extremely rich textual data representations that encourage, if not require, development of sets of tools to exploit features of encoded text to perform particular tasks.
It may be the case that one general tool will never fit all possible uses for encoded documents, but that a set of more specialized, interoperable tools for end-user applications will provide a mechanism for cost-effective deployment of end-user applications.
As the ARTFL Projects contribution to the collaborative development of these tools, PhiloLogic has been enhanced to support a wide variety of TEI-Lite (XML and SGML) encoded documents optionally using the Unicode character specification. We feel that Humanities Computing applications are particularly well suited to open source development by a community with wide ranging technical abilities that is not well supported by the commercial sector. Our goal is to provide as many features as possible while not requiring significant administrative or development work to use effectively.
Originally implemented to support large databases of French literature, PhiloLogic has been extended to support a wide variety of textual and hypermedia databases in collaboration with numerous academic institutions and, more recently, commercial organizations.
PhiloLogic is a modular system, in which a textbase is treated as a set of coordinated or related databases, typically including an object (units of text such as a letter, scene, document, etc) database, a word forms database, a word concordance index mapped to textual objects, and an object manager mapping text objects to byte offsets in data files. Each of these databases is stored and managed using its own subsystem.
Main features:
- light, fast, robust, extensively used and tested
- few dependencies, basic installation almost wholly self-contained
- out of the box operation with many configuration options
- TEI-Lite XML/SGML with Unicode support
- MySQL back-end for bibliographic searching
- optional XML-aware or non-XML bibliographic loaders
- interoperability across certain systems
- fault tolerant
- open source
Enhancements:
- CGIs have been modified to support multilingual user interfaces.
- 300 system messages have been translated into French and modularized into language-specific arrays.
- Word padding in KWIC reports has been fixed.

Meldware Communication Suite is a platform independent groupware package consisting of:
Meldware Mail
Meldware Calendar
Meldware Webmail
Meldware Secure Administration System
Together the package provides support for thousands of users to concurrently send and receive email and schedule meetings. MCS uniquely allows you to store all messages and scheduling events in nearly any database and runs on nearly all popular software and hardware platforms.
Additionally, while the scheduling and calendaring services are able to be installed separately, the integrated featureset provides both a unique and powerful experience to both users and server-side Mail Based Applications and Collaboration Based Application Services.
The MCS platform provides security integration using LDAP sources including Microsoft Active Directory as well as flat-file and Database sources. Additionally, extensible security allows custom authentication/authorization sources.
Enhancements:
- IMAP is now stable with Mozilla Thunderbird and POP/SMTP are production ready.
- New Filestore code was implemented and many improvements were made in mailbox and storage code.