First, let me introduce myself quickly. I am founder at Oslandia, a company specialized in OpenSource GIS for more than 6 years now. We are developers, and very active in the OpenSource GIS community, especially PostGIS ( Spatial Database) and QGIS ( Desktop GIS).
We are currently working more and more on water-related subjects, and especially water distribution network management and simulation.
One of our goals is to better integrate the GIS world and the simulation world, especially in the field of water ( distribution, wastewater, hydrology).
We developped qgis-epanet which is a plugin for QGIS to let the user drive Epanet simulations, get results, and visualize these results directly in QGIS.
The source code is here :
And you can see a demo video here :
The plugin has a basic feature set for now, but will probably be extended in the future, according to our client's needs. Everyone is welcome to contribute to this.
We also gather documentation and use cases for water-related topics here :
Aside from the simulation part, we also started to work heavily on qWAT, which is a QGIS plugin dedicated to network management. It is based on a PostGIS spatial database data model, and provides a GUI for these objects, so as to be able to manage the network from within QGIS. Of course all features of QGIS for cartographic exploration and production are available.
There are already some users with qWAT deployed for production use, and we have funding for industrialization and more features for next year.
qWAT like other QGIS plugins is opensource. One of the next step, already easily done, is to provide the ability to directly run simulations with qgis-epanet on a qWAT model.
Note that QGIS and all (Python) plugins are based on the QT framework, which is a very good library for GUI development. Should you wish to create a new multi-platform GUI for Epanet, QT would probably be a good choice, and we may mutualize things with QGIS too.
We are really glad to see EPANET going to a full opensource project and organization. This has been a stopper for us for a while, not having enough visibility on the project, with duplication of efforts and code balkanization. It seems to be on the right tracks now.
We hope we will be able to help the Epanet project directly at some point, by improving the code, features, or providing help for any OpenSource-related issues, since we have a good knowledge in this, be it on the licence side, business models, project organization and dynamics...
Meanwhile, we wanted to thank you for this good simulation tool, which really helps us being relevant for a full GIS/water simulation integration.
Edit : a dumb rule of this forum does not want me to include more than 2 links in the message. Other links in answers to this message.