epanet-js is a modern, web-based water network modeling tool based on the EPANET engine. It allows you to build, simulate, and analyze water distribution networks directly in your browser without installing any software.

Yes! epanet-js uses a local-first approach, meaning your project data is saved directly to your computer, not to our servers. This ensures your sensitive network data remains private and under your control. Learn more about the Local-First Approach.

No, you can start using epanet-js immediately without creating an account or logging in. Simply visit our website and launch the application to begin modeling.

Yes, epanet-js supports importing .inp files from desktop EPANET. You can seamlessly transition your existing projects to our web-based platform.

Yes! epanet-js works on all modern browsers including Chrome, Firefox, Safari, and Edge. Since it runs in a web browser, epanet-js works great on macOS, Windows, and Linux. This makes it a great option if you've had trouble installing traditional EPANET on a Mac. For the best experience, we recommend using the latest version of your preferred browser.

Yes, our source code is public from day one, but there’s a two-year delay from the time we release a new version to when it becomes fully open source. This is how we drive sustainable open-source development for epanet-js, and, by extension, EPANET. You can learn more about why we’re doing this and how the FSL license works here.

We offer different support options depending on your plan. Free users can access our community forums and documentation, while paid users receive priority email support. Educational users have access to specialized resources for classroom use.