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.


It suggests that is not escape from the world, but the collapse of the illusion that you are inside the world rather than the world becoming aware of itself . 3. Three Pillars of Practice | Element | Meaning | Action | |--------|---------|--------| | Maya | Perception filters | Question your stories. Notice when fear or desire warps reality. | | Kaia | Embodiment | Feel the body as sacred ground. Breathe into tissues, bones, fluids. | | Gaia | Systemic belonging | Act as a cell in a planetary immune system. Heal local = heal whole. |
Illusion → Embodiment → Integration → New Illusion (willingly chosen, not unconsciously suffered). 4. A Short Myth In the time before time, Gaia dreamed a thousand separate selves. Each self forgot it was a dream. They named their forgetting “Maya.” They named their separate bodies “Kaia.” They built civilizations inside the sleeping goddess. One day, a single cell in her ocean stopped swimming and listened. It heard the pulse beneath all pulses. It whispered to another cell: “We are not in her. We are her.” And the dream began to wake, not as an ending, but as a deeper kind of dreaming—one where the dreamer and the dreamed finally recognize each other’s face. 5. Mantra & Use Chant (3–7 rounds): Ma-ya-ka-ia-ga-ia (6 syllables, slow like a heartbeat)
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.
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.
It suggests that is not escape from the world, but the collapse of the illusion that you are inside the world rather than the world becoming aware of itself . 3. Three Pillars of Practice | Element | Meaning | Action | |--------|---------|--------| | Maya | Perception filters | Question your stories. Notice when fear or desire warps reality. | | Kaia | Embodiment | Feel the body as sacred ground. Breathe into tissues, bones, fluids. | | Gaia | Systemic belonging | Act as a cell in a planetary immune system. Heal local = heal whole. |
Illusion → Embodiment → Integration → New Illusion (willingly chosen, not unconsciously suffered). 4. A Short Myth In the time before time, Gaia dreamed a thousand separate selves. Each self forgot it was a dream. They named their forgetting “Maya.” They named their separate bodies “Kaia.” They built civilizations inside the sleeping goddess. One day, a single cell in her ocean stopped swimming and listened. It heard the pulse beneath all pulses. It whispered to another cell: “We are not in her. We are her.” And the dream began to wake, not as an ending, but as a deeper kind of dreaming—one where the dreamer and the dreamed finally recognize each other’s face. 5. Mantra & Use Chant (3–7 rounds): Ma-ya-ka-ia-ga-ia (6 syllables, slow like a heartbeat) mayakaiagaia
Simple, quick, and useful right out of the gate — designed to open-and-go.
Launch epanet-js now