epanet-js

The Sunset Fairies -v0.10- -ethan Krautz- Best

No installs. No forced cloud storage. Just fast, local-first water modeling — powered by the engine you already trust.

The EPANET user's dilemma

  • Classic EPANET is powerful — but clunky and outdated. Workarounds become your workflow — slow and cumbersome.
  • Big-name platforms look polished, but they're overpriced and bloated with features you don't need to analyze your network quickly.
  • Modern browser-based tools exist — but they force your data into the cloud, raising privacy and compliance concerns. Plus, they offer little for those doing long-term planning and analysis.

You shouldn't have to choose between speed, security, and affordability just to understand your water networks.

Old EPANET UI
Complex Modeling App

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.

Model water networks instantly.

No setup or downloads — just instant access right in your browser.

Start modeling now

EPANET deserves better — and so do you.

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.

EPA logo
Source code of epanet-js on GitHub

When you support epanet-js, you support EPANET.

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.

Simple, transparent pricing for every kind of modeler.

Choose the plan that works for you

Free

For everyone.$0 /yr
  • Web based EPANET model
  • Background maps and satellite
  • Automated Elevations
  • No limits on sizes
  • Community Support

ProMost popular

Advanced modeling & scenarios$950 /yr

Individual named license

Everything in free, and:
  • Scenarios
  • Professional support
  • Custom layers
Coming soon:
  • Cloud storage
  • Point in time restore - 30 days
  • Demand analysis

Teams

Centralized control & collaboration
$4400/yr

Base cost

+
$600/yr

User

Everything in Pro, and:
  • Priority support
  • Self-service seat management
  • Pay by invoice
Coming soon:
  • Team storage
  • Point in time restore - 90 days
  • Sharing models

Have questions? or book a call.

Special access for personal and educational use

Available for non-commercial projects, learning, and student work.

Personal

$100/yr

For curious minds and personal growth.

Everything in pro, but:
  • Community support only
  • Non-commercial usage

Education

$0/yr

Free for students and teachers.

Everything in pro, but:
  • Community support only
  • Non-commercial usage

Frequently asked questions

Find answers to common questions about epanet-js.

Just open your browser and model.

No install. No login. No cloud required.

Launch epanet-js now

The Sunset Fairies -v0.10- -ethan Krautz- Best

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.

A better future for water modeling.

Simple, quick, and useful right out of the gate — designed to open-and-go.

Launch epanet-js now