GLS Software, a division of GLS Consulting, specialises in the development and maintenance of advanced software solutions tailored for engineering infrastructure analysis, design, and management. Our expertise spans critical domains such as water systems, revenue enhancement, sanitation, storm water management, electrical engineering and fibre networks.
Since the inception of our first software in 1989, GLS Software has consistently been at the forefront of innovation, delivering high-quality products renowned for their reliability and performance. Over the years, we have built a solid reputation for excellence, backed by our unwavering commitment to providing superior support to a diverse clientele. Our clients include municipalities, utilities, consultants, and academic institutions from around the world, all of whom trust GLS Software to meet their complex engineering needs with precision and efficiency.
GLS Software is proud to be an official implementer of the Qatium digital network twin solution in Southern Africa, and a global development partner in its ongoing innovation.
Experience fast and powerful water network modelling with Wadiso. Its rapid and efficient design, combined with user-friendly features, makes it an essential tool for water management professionals.
Leveraging EPANET and a GIS-based platform which further enhances its capabilities, delivering accurate and detailed insights for informed decision-making in water network operations and planning.
Edisan is specifically designed for spatially modelling electrical infrastructure networks. It offers speed, power, and user-friendliness. Its GIS-based platform further enhances its utility, providing users with a comprehensive and reliable tool for all their modelling needs.
Albion is a 2D CAD/GIS platform designed to handle large amounts of data. Its sophisticated database wrapping techniques enable you to work with any data type using the same intuitive workflow as editing a spreadsheet, giving you control over when to save your changes.
With rapid rendering of any view, Albion delivers the speed and performance you expect from a top-tier desktop GIS, ensuring a smooth and efficient user experience.
Sewsan is a robust software tool designed for modelling sewer systems. It is known for its exceptional speed, power, and user-friendly interface. Being GIS-based further enhances its utility, allowing for seamless integration with geographical information. This combination of speed, power, and user-friendliness makes Sewsan unmatched for professionals working in sewer system modelling and analysis.
Swift is a powerful computer program that performs analyses on municipal billing databases, providing essential insights to Municipal Infrastructure Managers. It integrates with sewer and water distribution models to accurately model water demand and effluent production. Swift's user-friendly interface simplifies complex data interactions, making it a valuable tool for optimizing resource allocation and improving the management of municipal water and sewer systems.
HydroSWMM offers a streamlined approach to integrated storm water systems by embedding EPA's Storm Water Management Model (SWMM) within a geographical information system (GIS). Developed by engineers for engineers, our software is designed to simplify the system modelling and planning process at every stage, making it more intuitive and efficient.
The PRP application simplifies pipe replacement assessments by evaluating Likelihood of Failure (LF) and Consequence of Failure (CF) using various data-driven variables. It calculates replacement potential as the product of LF and CF, aggregates results with GIS to identify key focus areas, and supports multi-year investment planning based on budgets and project needs.
Trial Versions
We do not distinguish between trial and full versions. After installation, the downloaded application will simply run in trial mode for 30 days, if you do not enter a valid license. Contact us to buy a license. Feel free to download and try any of the applications below.
Typically, when our applications are running in trial mode, all their modules are enabled, but modelling is restricted to 50 pipes, cables or stands, DTM sizes are limited and commercial online map sources disabled.
Courses
GLS offers structured Continuing Professional Development (CPD) accredited courses in the use of GLS Software.
These courses are either presented at the dedicated training facility in Stellenbosch at the client venue, or online.
GLS is registered through CESA with the Engineering Council of South Africa (ECSA). Our SPV number is CESA-SPV-0054-11/2026
The following courses are currently available:
Analysis and Design of Water Distribution Systems using Wadiso (2 CPD credits)
Analysis and Design of Sewer Systems Using Sewsan (1 CPD credit)
For more information on attending the CPD and other courses, please submit your query on our Contact page.
Downloading and Installing the Software
You require at least Microsoft™ Windows 10 Professional with 8GB or RAM. Ensure you are installing the software with Windows Administrator rights but then run the software for the first time as the end user, i.e. not a Windows Administrator user. The software is currently only available in English, but more languages are planned.
Comprehensive Online Help Guides are available from the Help menu in the software or below. Please follow at least the Quick Start Guides for the Applications and for Albion!
Click on the History link next to each product below to see what's new.
Latest Downloads
Last update: November 2025 (Wadiso & Sewsan: January 2026)| Name | Changes | Size |
|---|---|---|
| Wadiso | History | 115 MB |
| Wadiso (64 bit alternative) | History | 119 MB |
| Edisan | History | 106 MB |
| Albion | History | 91 MB |
| Sewsan | History | 119 MB |
| Sewsan (64 bit alternative) | History | 127 MB |
| Swift | History | 98 MB |
| HydroSwmm | History | 97 MB |
| PRP | History | 92 MB |
| Fonis | History | 87 MB |
| MicrosoftEdgeWebView2RuntimeInstallerX64.exe (Only if prompted) | 124 MB |