Free to manage group policy you must log on to the computer with a domain user account software for linux

Oxylus Newsletters System is a complex newsletter system. It allows you to manage multiple groups.
You can import and export users, and public subscription is allowed. Oxylus Newsletters System project allows linux users to schedule newsletters for a specific date using a crontab job.
For each sent newsletter, you can see its history and whether it was successfully sent.
Enhancements:
- This version is fully compatible with PHP5.
- The mails are sent just once to all the users.
- The SQL error which occurred when new groups are created was fixed.
- Various framework bugfixes were made.

Group User Folder provides a Zope Product that manages Groups of Users.
GroupUserFolder is a kind of user folder that provides a special kind of user management. Some users are "flagged" as GROUP and then normal users will be able to belong to one or serveral groups.
Enhancements:
- Fix _getMemberIds for LDAPUserFolder 2.7 when groups are stored in LDAPUF [encolpe]
- Got rid of zLOG in favor of logging. [stefan]

GeboGebo is a wiki system written for tdbengine. It stores all data in a local database structure and thus provides an indexed fulltext search.
GeboGebo is available for free download. It runs on Linux and with a little handwork on Windows 32-Bit as well. The name GeboGebo derives from the Germanic rune gebo, which means as much as "Giving and taking". This is the philosphy of a WikiWiki and is so perfectly with this name.
Due to massive spamming we decided to lock pages for anonymous edit. If you would like to test GeboGebo please register and then login or use the user account "Guest" whose password is "Guest". The sandbox is waiting for you to play around.
For installation of GeboGebo:
Ensure you have a working tdbengine installation. If you dont, better read those Link instructions or this Link German tutorial for IIS setup (with loads of screenshots).
unpack the gzipped tar-archive into your www-root directory
enter the gebo directory on console and run ./make.sh
open your web browser and enter the URL leading to your GeboGebo installation directory
Main features:
- The Automatic Link System links pages by their names without explicitely having to be marked as link
- GeboGebo stores all data in a database structure providing high performance data access by using intelligent indexes.
- brings its own mini http server which makes installation very easy
- The indexed fulltext search makes information retrieval a breeze.
- Pages can be renamed at any point of time, without any loss of information.
- All activities get locked and earlier revisions of pages can be restored from each pages infinite history.
- GeboGebo is capable of providing all information as static pages for faster read access and better indexing possibilities for 3rd party diggers.
- The user management is simple but effective: allow or disallow anonymous access in whole or for several pages and enable or disable self registration of new users.
- The User list provides information on registered users and points to their personal wiki pages.
- A list of missing and a list of unreferenced pages help filling content gaps in your wiki
- Fill a blacklist with patterns of wiki page names that may not be edited, if already existing, or even may not be created, if they do not already exist.
- File and Image uploading makes GeboGebo the perfect system for your simple document management.
- Users can subscribe to pages and get informed via EMail when those pages are changed.
- RSS feeds for your news aggregator
- Namespaces support you in dividing your Wiki into independend sections.
- Macros and plugins open all possibilities of tdbengine programming to you and your Wiki
- Link meatball>InterWiki links help you to reference information in other widely known wikis
- GeboGebo is released under the terms of the GNU General Public License (GPL).
Enhancements:
- due to a missing sub directory the minihttp server could not start before gebogebo had been running at least once on another web server before. Fixed.
- new switch CreateStaticIndex in the configuration now allows decisions made concerning the automatic index.html file creation (thanks for the tip to Malcolm)
- bug fix for the subscription list which before returned a blank page caused by an internal error (thanks to Malcolm)

eXtended Account Management System is a PHP-based application suite made for managing electronic mail accounts on multiple domains in a virtual hosting environment.
The XAMS eMail management system primarily consists of a powerful administration panel for managing users, aliases, mailbox quotas, and other mail-related functions.
Main features:
- Manage any number of domains, mailboxes and aliases
- Multiple domains can be grouped as a "site".
- If you have, for example, two domains domain1.tld and domain2.tld within site site1
- then mails to either of the two email addresses for user user (user@domain1.tld
- or user@domain2.tld) will be delivered to one mailbox.
- Autoreply (out of office) support
- Mail accounts are independent from system accounts
- Mailboxes can have quotas, which you can manage by reseller, site or user.
- Four different user-levels: Administrators, Resellers, Customers and Users
- - each user-level and each user can have individual restrictions
- Easy to use, web based GUI (front end)
- GUI based BIND (DNS server) configuration
- Supports the Exim mail transfer agent
- Supports the Courier-IMAP mailbox server, which provides POP and IMAP access
- Supports the MailScanner virus scanner
- Supports MailScanner and SpamAssassin
- Supports any web-based mail user agent that uses POP or IMAP (Squirrelmail preferred)
- Supports following SMTP-AUTH modes: PLAIN, LOGIN and CRAM-MD5 with or without TLS
- Uses MySQL or PostgreSQL for account storage
- Uses CDB for fast domain lookups in Exim
- Source package includes PAM (Pluggable Authentication Modules) module and Squirrelmail plugins
- Provides easy to use debian packages (.deb files)
XAMS manages these domains and user accounts in a database, entirely separate from your Unix system environment.
XAMS ties together and integrates with these packages to provide a coherent virtual hosting solution for e-mail:
- Exim, a flexible mail transfer agent (MTA) with an intuitive and flexible configuration system
- The Courier IMAP/POP server for mailbox access
- MySQL, a powerful, free database server, used for storing domain and account information.
XAMS does not currently manage FTP or HTTP servers. The XAMS graphical user interface is written in PHP, runs on top of Apache, and produces XHTML 1.1 compliant pages.
Enhancements:
- Several bugs were fixed regarding Exim configuration, SQL, and more.

User Account Information provides an ethernet users/customers traffic counter.
User Account Information is lightweight system for accounting for ethernet traffic on a per-user basis.
It includes a Web-based interface for allowing users to view their own network accounting information.
This product was designed and was tested in RedHat Linux 6.2 and in SlackWare Linux 7.0.
Main features:
- For each customer (who have IP adress in your local network area) are added two ipchains rule for counting input and output traffic.
- Each customer can look his own account information through WEB-interface.
- You ( as system administrator) can correct anything You want or anything you dont like in this program.
Enhancements:
- A date format error solely affecting output with DD/MM/YYYY action dates was corrected in the cgi-bin part.

Deadlock is a powerful, customizable, fully featured user management system which protects Web directories and documents using Apaches htaccess and htpasswd.
It features email verification and administrator approval capabilities that require the administrator to approve accounts before they become active. Deadlock supports both Basic and Digest authentication.
Main features:
- Administration Panel
- All settings and administrative controls are in the admin panel.
- User Panel
- Gives users the ability to change their password, email address, and any other account information
- Admin Approval
- When this option is enabled, the administrator must approve accounts before they are able to login to the protected area.
- User Email Verification
- Users are sent a confirmation email to the address specified and must click the link in the email to verify that the email provided is their email.
- Multiple Authentication Types
- The administrator has the option to choose between Basic and Digest authentication.
- Auto htpasswd generation
- Automatically generates the .htpasswd file containing the users when a new user is added.
- Auto htaccess generation
- Automatically generates the .htaccess file when the name of the protected area is changed.
- Templatable user panel pages
- The user panel pages are generated with a template engine, allowing you to customize the pages that the user sees by simply editing the html templates.
- Templatable System Emails
- Customize system emails by editing the templates. Deadlock does not yet include an editor in the admin panel.
- Web based configuration
- Configuration options can easily be modified through the administration panel.
- Integrated Email Functionality
- Specific users can be emailed straight through the admin panel, by simply selecting a link.
- Bulk Email all registered users
- Includes bulk email functionality allowing you to email everyone in the database.
- Search through user list
- The user list is searchable, allowing you to find a users account by just entering their last name, first name or username.
- Rollover Information
Enhancements:
- [bug fix] Fixed some problems that occur when gpc magic quotes is enabled
- [bug fix] Added some string escapes to mysql queries to prevent SQL injections
- [bug fix] If user edits their own account, notification email is not sent
- [security] Fixed bug that cuased problems when a user went to edit their account

Zenith Picture Gallery is a feature-rich picture gallery that organizes uploaded images into searchable categories, creates thumbnails, and stores individual statistics for each one.
Other features of Zenith Picture Gallery include downloadable categories and sub-categories, user accounts and profiles, batch adding via FTP and batch deleting, user comments and ratings, the ability to add languages and skins, the option to rebuild thumbnails, an IP blacklist, and a comprehensive admin control panel that provides access to a great deal of settings and formatting options.
Main features:
- Everything is done from the browser, from installation to configuration.
- Searcheable records by filters.
- Auto-resizing/resampling of images to thumbnails.
- Easy skinning.
- Categories and sub-categories with display permission options.
- User accounts, user profiles, control panels and user types.
- Easy management of languages.
- Blacklist containing IPs of troublesome users.
- Admin CP allows you to define countless settings and formatting options.
- A notice appears in the nav bar to admins when there are pictures, comments or users awaiting approval.
- Batch add pictures via FTP.
- Batch delete pictures.
- Rebuild thumbnails tool.
- Search result and display page addresses are linkable.
- Gallery can be turned on/off.
- Adding pictures can be disabled for guests.
- Sort pictures by Last comments, Most viewed, Top rated.
- ZIP and download pictures.
- User accounts, profiles and pictures can all be managed in the Admin CP.
- Option to receive an email when a picture is submitted.
- 21. Option to allow only registered users to view the gallery.
- 22. Option to set a timezone offset for picture submission dates.
- Categories are mapped to directories in the file structure.
- Users can choose a skin from the ones uploaded.
- Forgot my Password and Resend Activation Email tools.
- Admins can define custom fields for pictures.
- EXIF support.