Flowino for a simple, flowchart based programming system.
Banta is an easy-to-use, open source bill system for Windows OS.
US Environmental Protection Agency
EFDC is a multifunctional surface water modeling system.
Maui Solar Energy Software Corporation
A tool for active solar water heating system design, simulation, and prediction.
Maretec, Instituto Superior Técnico, Technical University of Lisabon
MOHID is a three-dimensional water modelling system.
MOHID Studio is an integrated GUI for the MOHID Water Modelling System.
Data Recovery Directory
Inventory control, bill invoice software, business invoicing, bookkeeping System.
Hydrologic Engineering Center
River Analysis System (RAS) to perform water flow analysis and computations.
This app sits in your system tray, and will ripple like a water applet.
TS pipe system for pressurized (water supply and sewage) networks.