The name OpenQM is a generic term used to describe both the open source and the commercial 'closed source' versions of the QM database.

QM is available on Windows, Linux (Red Hat, Fedora, Debian, Ubuntu, Centos, etc), FreeBSD, AIX, Mac OS X and Windows Mobile. Please ask if you need other platforms.

QM scales from single user systems to those running very large user communities.

A list price of less than one fifth of the price of some other multivalue products and no mandatory support contracts makes the total cost of ownership of the QM database highly attractive. A staged payment option is available for competitive upgrades.

The licence includes either one or ten years of free upgrades to new releases and platform changes. This period can be extended prior to expiry.

All new commercial QM licences include activation of the latest AccuTerm 7 - a complete GUI environment and terminal emulator - at no extra cost. Users with QM licences issued before May 2010 need a new AccuTerm activation code.

Reasonable levels of support are provided without charge for the first 60 days of a licence. Continued support is available from the distributor, dealer or directly from Ladybridge Systems at highly competitive prices based on actual use of the service or by pre-paid contract.

Standard features include:

• A zero maintenance file system for ease of use and minimal system administration.
• Query processor output in tabular, CSV and XML form.
• QMClient API for secure access to QM files and execution of commands and programs from other languages such as PHP, Java, Visual Basic and C/C++/C#.
• QMNet for access to QM data files on other servers.
• Virtual File System for access to alien file structures.
• Interface to MySQL and Sybase for SQL retrieval and update.
• Encryption of data files and network data for QMClient and QMNet using AES 128, 192 or 256 bit algorithms.
• Object oriented programming fully integrated into the QMBasic programming language.
• Extensive user security options including account restrictions, QMNet server access control and PAM authentication.

Licence options include:

• Reduced cost licences for standby systems.
• Device licensing to allow multiple connections from the same client system to consume only a single licence.
• Data replication for maintenance of standby servers or reporting systems

To download the commercial QM release 2.12-7 click here.

For third party applications and development tools, click here.

The open source version is intended for developers who want to experiment with new ideas with the possibility of contributing them to the mainstream QM product. It is not considered to be suitable for production use in a business environment.

This version is based on release 2.6-6 from November 2007 and contains only the core multivalue database components but it is adequate for the purpose for which it was released.

The open source version is released as a package that will build on Linux though users are free to migrate it to other environments.

In common with all software released under the General Public Licence, the open source version comes with absolutely no warranty or support.

This version of QM and modifications made to it can be freely used and distributed within the terms of the GPL. For a brief summary of what you are allowed to do under the GPL click here. For guidance on which version is right for you click here.

To visit the open source download page click here. For open source resources click here.

Although QM is not a clone of any other multivalue environment, it includes many features that provide a high degree of compatibility and minimise the effort required to migrate applications.

QM can import data from standard ACCOUNT-SAVE, FILE-SAVE and T.DUMP exports and has tools to extract data directly from some other environments.

Programs, scripts and dictionaries often require only minimal changes.