Free groupware servers software for linux

Moregroupware is groupware that includes standard modules like news, contacts, calendar and more. To make a long story short: moregroupware is a web-based groupware application. Some of the features that are worth being mentioned:
- Contact/address management
- Webmail
- full-featured Calendar
- ToDo management
- News
- Project management
- Some preferences for each module
- available in different languages
- Skins based on Cascading Style Sheets
Main features:
- simple setup wizard
- easy module management and upgrade
- advanced rights management
- integrated online help
- easily skinnable with CSS
- based on the Smarty template engine
- works on MySQL and PostgreSQL
- available in more languages than just english
Enhancements:
- This release finally summarizes the tons of bugfixes done over the past year (more than that), and as usual we have updated the bundled libraries to current versions.
- Please read the NEWS-0.7.4 file and the documentation for more information.
- more.groupware is a web-based groupware written in PHP. Including modules like webmail, notes, todo, contacts, project management, calendar and others.

Horde Groupware is a free, enterprise ready, browser based collaboration suite. Users can manage and share calendars, contacts, tasks and notes with the standards compliant components from the Horde Project. Horde Groupware bundles the separately available applications Kronolith, Turba, Nag and Mnemo.
Horde Groupware can be extended with any of the released Horde applications or the Horde modules that are still in development, like a file manager, a bookmark manager, a forum or a wiki.
Main features:
- Public and shared resources (calendars, address books, tasklists and notepads)
- Unlimited resources per user
- Translated into 41 languages including right-to-left scripts and unicode support
- Global categories (tags)
- Customizable portal screen including applets for weather, quotes, etc.
- 25 different interface themes
- Online help system
- Import and export of groupware data from other applications
- Synchronization with PDAs, mobile phones, groupware clients
- Integrated user management, group support and permissions system
- User preferences with global default values
- Strong integration, e.g. address book lookups in meeting planning, task due dates in calendar
- Platform independant, works on any web server with PHP support, i.e. Linux, Windows, Solaris, Mac OS X Server
- Abstract database support, e.g. for MySQL, PostgreSQL, Oracle, Microsoft SQL-Server
Calendar
- Day, week, work week, month and year views
- Recurring and all-day events
- Alarms with email notifications
- Simple and advanced search forms
- Meeting planning, also with other calendar applications
- Email notification about changed events
- Free/busy information exchange with other calendar applications
- Subscription of remote calendars
- Integration into external clients like Apple iCal, Mozilla Sunbird, Microsoft Outlook
- iCalendar and iTip support
Contacts
- Distribution lists/email groups, also across address books
- Simple and advanced search forms
- Customizable address book listings
- vCard support
- Address book pager (rolodex)
- Customizable contact fields
- Integration of existing address books
Tasks
- Priorities and due dates
- Searchable descriptions
- Email notification about changed tasks
- Integration into external clients like Apple iCal, Mozilla Sunbird, Microsoft Outlook
- vTodo support
Notes
- Fulltext search
- Character counter
Enhancements:
- A local arbitrary file deletion vulnerability has been fixed.
- The Oracle session handler has been rewritten.
- vTimezone support for iCalendar data and ORG support for vCard data have been added.
- Samba and Cyrus SQL authentication drivers, automatic Web root detection, signature dimming, and compatibility of generated ZIP files have been improved.
- Calendar support for non-ASCII character sets has been improved.
- vCard support has been improved.
- Brazilian Portuguese, Catalan, Dutch, Finnish, French, German, Portuguese, and Traditional Chinese translations have been updated.

Simple Groupware is a complete groupware package written in PHP, XML, SQL, HTML, CSS and sgsML.
Unlike other groupware software, Simple Groupware contains the new programming language sgsML. It enables the quick creation of powerful web applications.
Simple Groupware is Free Software, released under the GNU GPLv2 License.
Main features:
- A 100% web-based application (no special client applications or plugins required). Optional a client for Windows is available to make downloads/uploads easier
- Complete secure communication using SSL
- Easy and intuitive user interface
- One platform for managing, controlling and developing business processes
- Autonomy: Simple Groupware is fully driven with open technologies
- Individuality: All hierarchical organization structures and responsibilities can be represented and managed in the application
- Intelligent knowledge management: e.g. find everything faster using phonetic search algorithms and automatic file / content indexing
- Notifications: get notified when data changes by using RSS feeds
- Unicode: Simple Groupware fully supports Unicode characters using UTF-8
Modules included:
- Calendar
- Contacts
- E-mails
- Tasks
- Files
- Notes
- Passwords
- Bookmarks
- Portal
- Chat
- FAQ
- News
- Forum
- Gallery
- Projects
- Statuses
- Templates
- Inventories
- Resources
- Brands
- Locations
- Distributors
- Device types
- Offices
- Positions
- Companies
- Departments
- Contact groups
- Contact activities
- Spreadsheets
- Users
- Groups
- Events
- Backups
- Rights
- Search
- Statistics
- iCalendar
- IMAP
- POP3
- SMTP
- RSS
- vCard
- LDAP contacts

POGI is the PHP OpenGroupware Interface. It allows PHP enabled websites to be easily integrated with the powerful OpenGroupware groupware server. Current versions of POGI work with PHP version 4 and 5.

Tigase Server project is a lightweight and scalable Jabber/XMPP server. No third party libraries are needed. For services with very high load and a huge number of users, it can be deployed on as many machines as needed.
Enhancements:
- This release corrects and improves the packet filter, adds a startup script for Mandriva Linux, and fixes a problem with stream initialization on very fast machines.
- The IOService class is now synchronized.
- There are many performance improvements, and processing packets from/to remote servers has been added.

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.

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

Anemon Dhcp Servers goal is to create an implementation of the DHCP protocol under GPL and a lot of stuff around to facilitate network management.
The python sqlobject modules gives anemon the ability to use many database as backend (mysql, postgresql, mssql, sqllite, sybase, etc..)
The project is subdivised (at the moment) in 4 components :
- The Anemon Dhcp Server is a Python/SQL implementation of the DHCP server protocol
- The Anemon Web Center is a web management interface to Anemon Dhcp Server and MyDNS
- The Anemon Dhcp Client will be a Python implementation of the DHCP client protocol
- The Anemon Dhcp relay will be a Python implementation of the DHCP relay protocol