Southdown House Software

High Performance, Low Maintenance Database Technology

Actian Zen is the perfect database engine for small to midsized businesses.  It's been refined with over 25 years of focus on the issues that are key to the SMB

  • Delivering consistently superb application performance
  • Long term reliable operation without requiring a database administrator
  • Self tuning and self optimizing
  • Simple, fast (and sometimes completely invisible) installation
  • Easy upgrades
  • Years of backward compatibility

ISVs who build and maintain mission-critical applications for small to mid-sized enterprises need performance, reliability, and database features that minimize support requirements.

And, they need an easy migration path to new OS and hardware platforms.

Actian Zen simplifies development and deployment, and minimizes the adoption challenges of new technologies including:

  • Windows for Desktop & Server
  • Linux distributions
  • 64-bit computing
  • Multi-CPU & multi-core processing


Zen Enterprise/PSQL Server
Zen Enterprise (formerly PSQL Server) edition is for Client/Server installations, starting from 6 users, scaling up to hundreds of concurrent users.
  • Base user count products available as 6, 10, 20, 35, 50, 100 or 250 users
  • User Count Increase products are available in the same denominations to stack onto a base licence
  • Windows, Linux, OSX
  • 32 & 64-bit.
Zen/PSQL Workgroup
Zen/PSQL Workgroup edition is for smaller installations of 5 or fewer concurrent users.
  • Base user count products available as 1, 3 or 5 users.
  • The +1-User Count Increase product is available to stack onto the base licence.
  • Windows, 32-bit.
Zen Cloud/PSQL Vx Server
Zen Cloud (formerly PSQL Vx Server) is for installations where the number of concurrent users is not necessarily countable, such as multi-tenant and SaaS setups.
  • Cloud/Vx Server licences are capacity-based, determined by the amount of data in use
  • Base licences are available as Small (20GB), Medium (100GB), Large (200GB) and Super (Unlimited)
  • A stackable 10GB Capacity Increase licence is available to increase the data in use size
  • Windows, Linux, OSX
  • 32 & 64-bit.
Zen Core & Zen Edge
Zen Core & Edge editions are for IoT environments, offering feature-rich SQL/NoSQL data access with a minimal footprint.
  • Zen Core licences are available in bundles of 500, 1,000, 10,000 & 100,000 copies
  • Zen Edge licences are available in delopment packs of 100, 250 and 1,000 seats
  • Core: Android & iOS
  • Edge: Raspbian & Windows


Cross Platform Support

Cross platform support enables development and deployment on multiple platforms, including 32-bit and 64-bit Windows & Linux, MacOS and NetWare.

  • Binary compatibility among different platforms allows you to freely move your database from one OS to another.
  • A common API for all engine platforms provides your application a single code base and enables you to port it without rewriting any code.
  • Multiple platform deployment capability allows you to write your application once, and then deploy it anywhere.
Maintenance Free Operations

Maintenance-free operations guarantee that you will focus on meeting your business objectives rather than on downtime and rework.

  • Dynamic cache operations, instantaneous file allocations, and index balancing, ensuring optimal performance without manual intervention.
  • Archival and transaction logging, eliminating typical time-consuming tracking tasks.
  • Server/Requester version independence dramatically simplifies your deployment.
  • Cross-platform dynamic parameters eliminate the need to remaster the database environment from platform to platform.
  • Support for backward compatibility to your legacy applications and databases.
  • Online File Defragmentation
Flexible Deployment and Great Scalability

Actian Zen/PSQL can scale from the desktop to high-performance servers capable of supporting high-volume environments.

  • Migration from workstation to workgroup client/server without application code changes.
  • Data safety and recovery features guarantee that your critical data is always available.
  • Complete transaction processing and recovery enables the user to easily recover changes made to a data file between the time of the last backup and a system failure.
  • Transaction durability, guaranteeing the integrity of your database.
  • High performance Btrieve transactional API delivers fast access to your data.
Robust Developer Tools and Support

An integrated application development environment provides you with the right tools to meet the demands of today's fast-changing technology environment.

  • Support for widely used development environments, such as .NET, Visual Basic, Visual C++, Delphi, and Java.
  • WYSIWYG development tools and complete SDK.
  • Actian Zen/PSQL provides you with the performance of transactional data access and the flexibility of relational access, delivering high-speed access to your data across all data access methods.
  • Pure Java interface.
  • Full Installation Toolkit - transparent deployment of the database engine as part of the business application.