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.


Regardless of which version you use, you should install the . This is a fan-made "wrapper" that: Allows for high-definition resolutions. Adds an "Auto-battle" restart button.
Older cracks can cause crashes on Windows 10 or 11 unless "Run as Administrator" or specific compatibility modes are used. Superior Alternatives
Despite being over two decades old, Heroes of Might and Magic 3 continues to attract new players and retain its loyal fan base due to:
" version typically leads to community-made repacks designed to bypass old disk requirements and run from a USB drive without installation. While convenient for nostalgia on the go, these versions come with specific technical tradeoffs and modern alternatives that are generally more stable.
Hi guys, is this edition good? How is this version vs. the GOG version?
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
Base cost
User
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.
Regardless of which version you use, you should install the . This is a fan-made "wrapper" that: Allows for high-definition resolutions. Adds an "Auto-battle" restart button.
Older cracks can cause crashes on Windows 10 or 11 unless "Run as Administrator" or specific compatibility modes are used. Superior Alternatives
Despite being over two decades old, Heroes of Might and Magic 3 continues to attract new players and retain its loyal fan base due to:
" version typically leads to community-made repacks designed to bypass old disk requirements and run from a USB drive without installation. While convenient for nostalgia on the go, these versions come with specific technical tradeoffs and modern alternatives that are generally more stable.
Hi guys, is this edition good? How is this version vs. the GOG version?
Simple, quick, and useful right out of the gate — designed to open-and-go.
Launch epanet-js now