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.


Born as in Kolkata, West Bengal, he hails from a Brahmin family with roots in Siwan, Bihar. Under the mentorship of Pujya Shri Prem Bhushan Ji , he transitioned from an industrialist to a world-renowned spiritual orator. Today, his teachings and music bridge the gap between ancient wisdom and the digital age, drawing massive crowds both in India and abroad. Most Popular Bhajans to Add to Your Playlist
"Many come asking," Gopal Das said. "They think the 'Exclusive' is a hidden raag, a lost composition. But do you know why they call it exclusive?"
: These platforms host his official discography, including recent 2024–2026 releases like "Aaj Bado Anand Avadh Me" and "Non-Stop Shri Ram Dhun". Amazon Music
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.
Born as in Kolkata, West Bengal, he hails from a Brahmin family with roots in Siwan, Bihar. Under the mentorship of Pujya Shri Prem Bhushan Ji , he transitioned from an industrialist to a world-renowned spiritual orator. Today, his teachings and music bridge the gap between ancient wisdom and the digital age, drawing massive crowds both in India and abroad. Most Popular Bhajans to Add to Your Playlist
"Many come asking," Gopal Das said. "They think the 'Exclusive' is a hidden raag, a lost composition. But do you know why they call it exclusive?"
: These platforms host his official discography, including recent 2024–2026 releases like "Aaj Bado Anand Avadh Me" and "Non-Stop Shri Ram Dhun". Amazon Music
Simple, quick, and useful right out of the gate — designed to open-and-go.
Launch epanet-js now