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.


This RAR file appears to be a third-party patch designed for Frozenheim , a popular Norse city-builder, often used to resolve issues like the game failing to launch, crashing, or failing to recognize Steam.
Use a tool like WinRAR or 7-Zip to extract the contents of the RAR file into a folder on your desktop. Locate Your Game Folder: Open Steam and go to your Library .
This generic fix is intended for the Steam version of Frozenheim . It generally works by replacing or repairing critical, often corrupted, steam_api64.dll files or patching the executable to bypass unnecessary launchers that cause crashes. Fixes "Game not opening" errors. Resolves Steam initialization failures. Bypasses launcher-related crashes. 📥 How to Install the Patch (Step-by-Step)
Download the Frozenheim_Fix_Repair_Steam_Generic.rar file.
Use Steam to verify the integrity of game files first, then apply the patch.
Disclaimer: Always backup your original game files before applying patches. Ensure you trust the source of your .rar files.
Right-click Frozenheim.exe and select "Run as administrator".
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.
This RAR file appears to be a third-party patch designed for Frozenheim , a popular Norse city-builder, often used to resolve issues like the game failing to launch, crashing, or failing to recognize Steam.
Use a tool like WinRAR or 7-Zip to extract the contents of the RAR file into a folder on your desktop. Locate Your Game Folder: Open Steam and go to your Library .
This generic fix is intended for the Steam version of Frozenheim . It generally works by replacing or repairing critical, often corrupted, steam_api64.dll files or patching the executable to bypass unnecessary launchers that cause crashes. Fixes "Game not opening" errors. Resolves Steam initialization failures. Bypasses launcher-related crashes. 📥 How to Install the Patch (Step-by-Step)
Download the Frozenheim_Fix_Repair_Steam_Generic.rar file.
Use Steam to verify the integrity of game files first, then apply the patch.
Disclaimer: Always backup your original game files before applying patches. Ensure you trust the source of your .rar files.
Right-click Frozenheim.exe and select "Run as administrator".
Simple, quick, and useful right out of the gate — designed to open-and-go.
Launch epanet-js now