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.


Neofax Latest Edition
Meet Jane Doe, a bright and ambitious young professional who has just landed a job at a mid-sized firm. Jane is eager to climb the corporate ladder but quickly realizes that her old college textbooks and outdated skills are not enough. Her boss hands her a copy of the latest Neofax edition, warning her that she needs to "sync up" with the company's communication protocols and "disrupt the paradigm."
Science Fiction, specifically a blend of Cyberpunk and Satire
As Jane dives into the world of Neofax, she discovers that the guide is more than just a reference book. It's a virtual reality platform, a social network, and a constant stream of updates that dictate the latest trends, buzzwords, and approved behaviors. The Neofax AI, known as "The Editor," watches her every move, offering suggestions and corrections to ensure she stays on the right track.
As Jane becomes more immersed in Neofax, she begins to feel like she's losing her sense of self. The guide's constant demands for optimization and conformity start to suffocate her creativity and individuality. She starts to rebel against The Editor's dictates, questioning the true intentions of Omni Infosystems and the implications of a society where people are forced to adapt to a never-ending cycle of updates.
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.
Neofax Latest Edition
Meet Jane Doe, a bright and ambitious young professional who has just landed a job at a mid-sized firm. Jane is eager to climb the corporate ladder but quickly realizes that her old college textbooks and outdated skills are not enough. Her boss hands her a copy of the latest Neofax edition, warning her that she needs to "sync up" with the company's communication protocols and "disrupt the paradigm." neofax latest edition
Science Fiction, specifically a blend of Cyberpunk and Satire Neofax Latest Edition Meet Jane Doe, a bright
As Jane dives into the world of Neofax, she discovers that the guide is more than just a reference book. It's a virtual reality platform, a social network, and a constant stream of updates that dictate the latest trends, buzzwords, and approved behaviors. The Neofax AI, known as "The Editor," watches her every move, offering suggestions and corrections to ensure she stays on the right track. It's a virtual reality platform, a social network,
As Jane becomes more immersed in Neofax, she begins to feel like she's losing her sense of self. The guide's constant demands for optimization and conformity start to suffocate her creativity and individuality. She starts to rebel against The Editor's dictates, questioning the true intentions of Omni Infosystems and the implications of a society where people are forced to adapt to a never-ending cycle of updates.
Simple, quick, and useful right out of the gate — designed to open-and-go.
Launch epanet-js now