epanet-js
No installs. No forced cloud storage. Just fast, local-first water modeling — powered by the engine you already trust.
You shouldn't have to choose between speed, security, and affordability just to understand your water networks.


The Lara Croft Collection on Nintendo Switch is a must-play for fans of action-adventure games and the Tomb Raider series. With its engaging gameplay, stunning visuals, and intuitive controls, this collection is the perfect way to experience the best of Lara Croft's adventures on the go. So, grab your Nintendo Switch, head to the eShop, and download The Lara Croft Collection in NSP format today!
The world of gaming has been graced with numerous iconic characters over the years, but few have left as lasting an impact as Lara Croft, the intrepid explorer and protagonist of the Tomb Raider series. With the release of on the Nintendo Switch, fans can now experience the best of Lara's adventures on the go, thanks to the convenience of the Nintendo eShop and the versatility of the NSP (Nintendo Switch Package) file format.
EPANET was a gift to the industry — free, open-source water modeling for all. But commercial vendors built on it, locked away improvements, and left the community behind.
epanet-js is our answer: a faster, simpler, affordable water modeling tool that protects your privacy and sustains the open-source future of water modeling.
We're proud to be part of the next chapter — and we're just getting started.

When you purchase more features in epanet-js, you're investing in the future of open-source EPANET development.
Our open-source model balances innovation and accessibility:
Anyone can build on our code. The two-year commercial-use delay gives us the incentive to keep pushing forward — and that fuels progress for everyone.
That means when you support us, you support more affordable hydraulic modeling software for the entire community.
Choose the plan that works for you
Individual named license
Floating shared license
Have questions? or book a call.
Available for non-commercial projects, learning, and student work.
For curious minds and personal growth.
Free for students and teachers.
Find answers to common questions about epanet-js.
The Lara Croft Collection on Nintendo Switch is a must-play for fans of action-adventure games and the Tomb Raider series. With its engaging gameplay, stunning visuals, and intuitive controls, this collection is the perfect way to experience the best of Lara Croft's adventures on the go. So, grab your Nintendo Switch, head to the eShop, and download The Lara Croft Collection in NSP format today!
The world of gaming has been graced with numerous iconic characters over the years, but few have left as lasting an impact as Lara Croft, the intrepid explorer and protagonist of the Tomb Raider series. With the release of on the Nintendo Switch, fans can now experience the best of Lara's adventures on the go, thanks to the convenience of the Nintendo eShop and the versatility of the NSP (Nintendo Switch Package) file format.
Simple, quick, and useful right out of the gate — designed to open-and-go.
Launch epanet-js now