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 "Zalim Istanbul" (translated as "The Tyrant of Istanbul" ) refers to a Turkish television drama series that blends crime, moral dilemmas, and political intrigue. As global audiences increasingly seek out international content, the demand for subtitles—particularly in English—has surged. However, the process of downloading such content raises critical questions about legality, ethics, and cultural accessibility. This essay explores the cultural significance of "Zalim Istanbul," the importance of English subtitles in expanding its audience, and ethical considerations for accessing international media. Cultural Context of Zalim Istanbul Turkish television dramas, or dizi, have gained international popularity thanks to their unique storytelling, lavish production, and exploration of universal themes. Zalim Istanbul, set against the vibrant yet tumultuous backdrop of Istanbul, centers on power struggles, betrayal, and redemption. Its narrative critiques societal issues such as corruption, gender dynamics, and the moral ambiguity of authority figures. As a dizi, it exemplifies the country’s creative industry, which has become a cornerstone of global entertainment.
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
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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.
The phrase "Zalim Istanbul" (translated as "The Tyrant of Istanbul" ) refers to a Turkish television drama series that blends crime, moral dilemmas, and political intrigue. As global audiences increasingly seek out international content, the demand for subtitles—particularly in English—has surged. However, the process of downloading such content raises critical questions about legality, ethics, and cultural accessibility. This essay explores the cultural significance of "Zalim Istanbul," the importance of English subtitles in expanding its audience, and ethical considerations for accessing international media. Cultural Context of Zalim Istanbul Turkish television dramas, or dizi, have gained international popularity thanks to their unique storytelling, lavish production, and exploration of universal themes. Zalim Istanbul, set against the vibrant yet tumultuous backdrop of Istanbul, centers on power struggles, betrayal, and redemption. Its narrative critiques societal issues such as corruption, gender dynamics, and the moral ambiguity of authority figures. As a dizi, it exemplifies the country’s creative industry, which has become a cornerstone of global entertainment.
Simple, quick, and useful right out of the gate — designed to open-and-go.
Launch epanet-js now