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.


Modern cinema is beginning to address previously "invisible" life stages, though often through a lens of humor or stereotype. Women Over 50: The Right to be Seen on Screen
The image of the forlorn older woman staring out a rainy window, waiting for her son to call, is dead. In its place stands Jean Smart verbally eviscerating a millennial writer. Michelle Yeoh kicking a security guard through a drywall. Emma Thompson getting naked in a hotel room with a sex worker.
But a seismic shift is underway. Driven by changing audience demographics, the rise of streaming platforms, and a long-overdue reckoning with systemic sexism, are no longer fighting for scraps. They are leading franchises, winning Oscars, and creating content that refuses to look away from the complexities of desire, ambition, loss, and resilience. MegaPack - Syren De Mer - Multi-Penetration MILF
The demographic shift isn't just on screen; it’s in the audience. The "silver economy" holds massive purchasing power. Producers have realized that women over 50 are a loyal and lucrative demographic that wants to see itself reflected in high-quality content.
The evolution of the onscreen narrative is inextricably linked to the women working behind the scenes. Veteran female directors and writers are bringing an entirely different aesthetic and emotional intelligence to Hollywood. Modern cinema is beginning to address previously "invisible"
The 1990s and early 2000s offered little improvement. For every Something’s Gotta Give (where Diane Keaton, then 57, was treated as a novel romantic lead), there were a hundred scripts where the love interest was 25 and the male lead was 55. The industry normalized the "May-December" romance while treating the "December-May" version as a comedy or a tragedy.
Through Hello Sunshine, she has prioritized female-led narratives like Big Little Lies and The Morning Show . Michelle Yeoh kicking a security guard through a drywall
Her comfort with multi-penetration (DP, DVP, or triple penetration depending on the edit) is immediately evident. Unlike younger performers who may brace for the intensity, Syren actively works her muscles, calls out cues to her partners, and maintains eye contact with the camera, creating an immersive POV feel.
The proliferation of streaming services and premium cable networks over the last decade has been the single greatest catalyst for the visibility of mature women. Unlike traditional network television or mainstream Hollywood studios, which often rely on broad, youth-centric demographics to secure advertisers or massive opening weekends, streaming platforms thrive on niche markets and subscriber retention.
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.
You may not know this, but for decades, the U.S. EPA has given the water industry an extraordinary gift: the free and open-source hydraulic modeling software EPANET. Odds are, if you've used any commercial hydraulic modeling software today, it was built on the EPANET engine.
The problem is, instead of giving back to their open-source roots like other industries do, big-name software vendors took EPANET's open code, built private tools on top of the engine, and then locked those improvements behind patents and proprietary licenses.
Some vendors even pressured the EPA to focus only on the engine — discouraging any effort to improve the interface or user experience for everyone else.
Those vendors now charge you exorbitant prices to use their software while EPANET lags behind — and utilities, engineers, and educators with smaller budgets suffer.
We think this is backwards — and we're on a mission to change it. We're focused on creating a better experience for the entire hydraulic modeling community.
That's why we built epanet-js under an FSL license — because we want to give you an affordable, easy-to-use water modeling option that creates a sustainable future for open-source EPANET development.
Support EPANET by using software that supports it back.
Simple, quick, and useful right out of the gate — designed to open-and-go.
Launch epanet-js now