The 2.0 version of SubWet is available as a free download on our website. The software lies within Development Tools, more precisely General. The actual developer of the free program is UNEP. The most popular version of the tool 2.0.
From the developer:
The Subsurface Wetland Model software SubWet has been developed to support the decision-making process by assisting experts and water managers in the design of constructed wetlands to improve water quality and treat domestic wastewater.
You may want to check out more software, such as Neodynamic Barcode Professional for Reporting Services, wTeach or eNCOREVista, which might be similar to SubWet.