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.


Sign in at manage.autodesk.com . Navigate to All Products and Services , find AutoCAD 2022, and click View Details (or License Details ) to reveal your serial number.
Using the incorrect key will lead to activation errors, even if the software versions are otherwise identical. How to Find Your Serial Number
Guide to AutoCAD 2022 Activation: Product Key 001N1 and Serial Numbers
A product key is a unique identifier used to certify that your software copy is original. For the 2022 release, Autodesk uses specific codes for each product: 001N1 AutoCAD LT 2022: 057N1 AutoCAD Architecture 2022: 185N1 AutoCAD Design Suite Premium 2022: 768N1
No setup or downloads — just instant access right in your browser.
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.
No install. No login. No cloud required.
Sign in at manage.autodesk.com . Navigate to All Products and Services , find AutoCAD 2022, and click View Details (or License Details ) to reveal your serial number.
Using the incorrect key will lead to activation errors, even if the software versions are otherwise identical. How to Find Your Serial Number
Guide to AutoCAD 2022 Activation: Product Key 001N1 and Serial Numbers
A product key is a unique identifier used to certify that your software copy is original. For the 2022 release, Autodesk uses specific codes for each product: 001N1 AutoCAD LT 2022: 057N1 AutoCAD Architecture 2022: 185N1 AutoCAD Design Suite Premium 2022: 768N1
Simple, quick, and useful right out of the gate — designed to open-and-go.
Launch epanet-js now