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.


Use the "Search" or "Map" functions regularly to progress the plot regarding missing family members. Technical Troubleshooting
As the last streetcar sighed away, the world unstitched itself at the seams. Amber ribbons pulled loose from the sky, and tiny hands—barely visible—picked at them, mending the evening where it frayed. On the roof above, a boy watched the fairies braid the light into a rope and toss it down for those who'd forgotten how to come home.
The doctors had given him six months. That was a year and a half ago. The cancer in his bones was a patient, hungry thing, but it had not accounted for the fairies.
The keyword "" refers to a specific version of a visual novel developed by Ethan Krautz . The game, titled The Sunset Fairies , is an adult-oriented title that has gained a following in the indie game community for its narrative-driven gameplay. Overview of The Sunset Fairies
One of the most notable updates was the introduction of a multiplayer mode, where players could join forces to tackle challenging quests and defeat powerful enemies. This update brought a new level of excitement to the game, as players could now collaborate and compete with each other in real-time.
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
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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.
Use the "Search" or "Map" functions regularly to progress the plot regarding missing family members. Technical Troubleshooting
As the last streetcar sighed away, the world unstitched itself at the seams. Amber ribbons pulled loose from the sky, and tiny hands—barely visible—picked at them, mending the evening where it frayed. On the roof above, a boy watched the fairies braid the light into a rope and toss it down for those who'd forgotten how to come home. The Sunset Fairies -v0.10- -Ethan Krautz- BEST
The doctors had given him six months. That was a year and a half ago. The cancer in his bones was a patient, hungry thing, but it had not accounted for the fairies. Use the "Search" or "Map" functions regularly to
The keyword "" refers to a specific version of a visual novel developed by Ethan Krautz . The game, titled The Sunset Fairies , is an adult-oriented title that has gained a following in the indie game community for its narrative-driven gameplay. Overview of The Sunset Fairies On the roof above, a boy watched the
One of the most notable updates was the introduction of a multiplayer mode, where players could join forces to tackle challenging quests and defeat powerful enemies. This update brought a new level of excitement to the game, as players could now collaborate and compete with each other in real-time.
Simple, quick, and useful right out of the gate — designed to open-and-go.
Launch epanet-js now