Free data management software for linux

Essential Management provides a project management system for organizing and writing technical documents.

Essential Management is a multi-user project management system for managing intricate and complex information. Its initial purpose was to allow software development teams to create, maintain, track, and store project requirements on a multi-project basis in a multi-user environment. It has now become more abstract in the type of data it can maintain, allowing the easy addition of new data models and other expansions. Information can be stored in any of several database management systems, and can take advantage of a networked DBMS.

The first and most important feature of the application is that data is stored in a central data repository managed by some database management server; initially PostgreSQL fills this role, but support for others are growing. The repository is fully searchable. An alternative data storage format exists in the form of a locally maintained XML file if the user wishes to use it.

One of the key features Essential Management was designed around is the ability to define and maintain relationships between requirements. Using the software requirement model as an example, our application allows users to define projects; each project is composed of zero or more root requirements, which are typically business level requirements. Each business requirement has zero or more sub-requirements, which either refine the parent business requirement or dive into the functional requirements which allow the business requirement to be achieved. This tree continues to branch and grow deeper until the most basic level that the user wishes to define is reached.

In addition the relationship between parent and child requirements, relationships can be defined between requirements not in the same branch. These relationships may have any meaning the user wishes to define and can be unidirectional or bi-directional.

Essential Management implements the concept of user level permissions, which provides a small measure of security for the projects and their requirements. Additionally, creation of and changes to requirements can be traced to the user who initiated the action.

Finally, the application provides a means to track changes made to requirements during their lifetime so it is possible to determine when a change was made, what information was changed and who edited the requirement.

phpIP Management is a complete IPv4 address management suite, built to handle the complexity of managing todays IP address space.
phpIP Management project was built to scale and address the full lifecycle of IP address space using techniques that are not administratively intensive.
Main features:
CIDR
- Full IPv4 CIDR support.
LDAP
- Support for LDAP based user accounts.
Licensed under GNU General Public License
- This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
IPv4
- Full IPv4 support using Pear Net_IPv4 class.
User Management
- User based management allows administrators to create users and assign different levels of permissions to the phpIP Management interface. Each user can set their own display preference.

DC Maintenence Management System is a Web-based application. DC Maintenance Management System records and analyzes customer complaints and repairs in water supply networks.
Enhancements:
- This is a maintenance and bugfix release that does not add any new functionality.

Real Estate Management Software is the perfect real estate management solution for real estate professionals.
Get all your listings on the web with free, easy to use web-based real estate management software.
Create your areas, school districts and property types and even upload images. Full featured searching available. 100% free license. Uses PHP and MySQL.
Enhancements:
- This real estate management release has some updates to the system documentation.

Learning Management System allows users to manage online learning classes.
It allows them to set up classes, create assignments online, and send messages to students from within the system for tracking.
Learning Management System is a simple system to move academic classes onto the Web in order to reach a larger audience.
Enhancements:
- This release fixed two bugs in the library file system.

ADSL Bandwidth Management HOWTO project describes how to manage outbound traffic on an ADSL modem.
Emphasis is placed on lowering the latency for interactive traffic even when the upstream and/or downstream bandwidth is fully saturated.
The purpose of this document is to suggest a way to manage outbound traffic on an ADSL (or cable modem) connection to the Internet. The problem is that many ADSL lines are limited in the neighborhood of 128kbps for upstream data transfer.
Aggravating this problem is the packet queue in the ADSL modem which can take 2 to 3 seconds to empty when full. Together this means that when the upstream bandwidth is fully saturated it can take up to 3 seconds for any other packets to get out to the Internet.
This can cripple interactive applications such as telnet and multi-player games.
Enhancements:
- Added links section

Resource Management Game project is a Web-based resource management game.

Resource Management Game is a PHP framework for easily creating resource management and strategy games.

Two playable games are included.

The system uses sessions to store data and should work out of the box with little or no configuration.