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.


: Unlike mainstream media, doujin works like those found in this archive are often the vision of a single artist or a small circle (circle-kei). This allows for highly niche storytelling and experimental audio design that mainstream publishers might deem too specific or risky.
The Architecture of Digital Intimacy: Analysis of RJ01031132
: These works typically revolve around established character tropes (the childhood friend, the elder sister, the caregiver) designed to trigger a specific emotional response known in Japanese subculture as moe . The success of a work like RJ01031132 often hinges on the voice actor's ability to breathe life into these archetypes through subtle vocal inflections. Cultural Context of Digital Distribution
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.
: Unlike mainstream media, doujin works like those found in this archive are often the vision of a single artist or a small circle (circle-kei). This allows for highly niche storytelling and experimental audio design that mainstream publishers might deem too specific or risky.
The Architecture of Digital Intimacy: Analysis of RJ01031132
: These works typically revolve around established character tropes (the childhood friend, the elder sister, the caregiver) designed to trigger a specific emotional response known in Japanese subculture as moe . The success of a work like RJ01031132 often hinges on the voice actor's ability to breathe life into these archetypes through subtle vocal inflections. Cultural Context of Digital Distribution
Simple, quick, and useful right out of the gate — designed to open-and-go.
Launch epanet-js now