DSS DSS Distributed Systems Software, Inc.
DSS provides expert software design, system implementation, and professional services, specializing in Linux, FreeBSD, Mac OS X, and other Unix platforms

Software Design & Implementation

Areas of Expertise

Client/Server Architectures:


Systems Programming:

Professional services

DSS offers a wide variety of professional services in the areas identified above and provides complete technical support for DACS. Additional information about DACS is available at dacs.dss.ca.

Per-hour and fixed-cost professional service agreements and contracts are available. Contact us for cost estimates. The relatively cheap Canadian Dollar makes us particularly affordable for out-of-country clients.


DSS is responsible for the design and implementation of DACS (the Distributed Access Control System), an open source, light-weight single sign-on system that provides extended authentication and access control capabilities for Apache and web-based services. DACS web services and commands can be used by application software, scripts, server software, and CGI programs for authentication and authorization checking functionality. DACS is a key component of Canada's National Forest Information System (NFIS) and has been deployed by other governmental agencies, businesses, and projects (About DACS).

For information about tdbm, an embedded high-performance database, please visit its microsite at tdbm.dss.ca.
[I'm not sure at what point tdbm morphed into an acronym for "The DataBase Machine". Officially, it is "Transactional DBM", or "DBM with (Atomic) Transactions".]

DSS was involved in the design and implementation of the NoSQL Dxstore Database System, an open source database for Linux, FreeBSD, and other systems.

Open source software and technical papers

A variety of open source licensed software is available. Although some of it is now very old, many packages continue to see regular use on a wide variety of platforms. A few packages can be found in commercial products, including millions of Apple Macs, iPhones, iPads, and iPods, as well as being used by other software.

Some older technical papers on distributed databases, directory services, and other topics are also available.

About DSS

Other projects we have recently been working on include:

Incorporated in 1997 and privately-held, DSS can bring an uncommon amount of knowledge and experience to almost any distributed systems project, as is clear from the company's unusually varied list of specialties and exceedingly deep background in many areas.

If you have any questions or would like additional information, please contact us!


© Copyright 1998-2016 DSS Distributed Systems Software Inc.
Victoria, British Columbia, Canada
Registered on Canada's National Government Suppliers' Directory