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.


The phrase "AvantGarde Extreme 35 Free" most likely refers to the ITC Avant Garde Gothic typeface, specifically a free digital version of the "Extreme" or ultra-bold weight, possibly in a 35-point size or an "Extreme 35" variant.
Avantgarde’s modern XD series uses sophisticated Digital Signal Processing (DSP) to time-align the horn drivers. You can replicate the "extreme" dynamic clarity using free software:
There is currently no widely recognized software, plugin, or product exactly named "Avantgarde Extreme 35."
Could you clarify if this is a video plugin, a music synthesizer, or perhaps a specific brand of eyewear/clothing? Knowing the category will help me provide a more detailed breakdown.
Here is an interesting look at why this specific category of product stands out: The "Zinc" Evolution
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.
The phrase "AvantGarde Extreme 35 Free" most likely refers to the ITC Avant Garde Gothic typeface, specifically a free digital version of the "Extreme" or ultra-bold weight, possibly in a 35-point size or an "Extreme 35" variant.
Avantgarde’s modern XD series uses sophisticated Digital Signal Processing (DSP) to time-align the horn drivers. You can replicate the "extreme" dynamic clarity using free software:
There is currently no widely recognized software, plugin, or product exactly named "Avantgarde Extreme 35."
Could you clarify if this is a video plugin, a music synthesizer, or perhaps a specific brand of eyewear/clothing? Knowing the category will help me provide a more detailed breakdown.
Here is an interesting look at why this specific category of product stands out: The "Zinc" Evolution
Simple, quick, and useful right out of the gate — designed to open-and-go.
Launch epanet-js now