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.


Depending on whether this is for a specific video game, a card game, or a general fictional concept, you may need to adjust the specific terminology (e.g., button inputs vs. card mechanics).
The audio, composed by former Samurai Jack sound designers, features a haunting soundtrack of flutes, taiko drums, and the rustle of wind through bamboo groves.
The most recent iteration of this genre on mobile platforms is Ninja Legends: Ultimate Battle . This title focuses on squad-based strategy rather than direct real-time action, requiring players to build an elite roster of warriors to dominate the leaderboards.
If you are looking for a piece on , the most famous battle centers around the rivalry of two names that define the "ninja legend" trope:
At its core, Ninja Battle Legends is an auto-battler strategy game set in a fictional feudal Japan known as "Shinobi-Realm." Unlike traditional fighting games where you control a single character, here you build a squad (a "Guild") of six ninjas. Once the battle begins, your ninjas fight automatically using AI-driven logic.
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. ninja battle legends
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.
Depending on whether this is for a specific video game, a card game, or a general fictional concept, you may need to adjust the specific terminology (e.g., button inputs vs. card mechanics).
The audio, composed by former Samurai Jack sound designers, features a haunting soundtrack of flutes, taiko drums, and the rustle of wind through bamboo groves.
The most recent iteration of this genre on mobile platforms is Ninja Legends: Ultimate Battle . This title focuses on squad-based strategy rather than direct real-time action, requiring players to build an elite roster of warriors to dominate the leaderboards.
If you are looking for a piece on , the most famous battle centers around the rivalry of two names that define the "ninja legend" trope:
At its core, Ninja Battle Legends is an auto-battler strategy game set in a fictional feudal Japan known as "Shinobi-Realm." Unlike traditional fighting games where you control a single character, here you build a squad (a "Guild") of six ninjas. Once the battle begins, your ninjas fight automatically using AI-driven logic.
Simple, quick, and useful right out of the gate — designed to open-and-go.
Launch epanet-js now