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 is a deep dive into the phenomenon of Jeremy's IT Lab, the community-driven ecosystem surrounding his notes, and why a simple PDF file has become the holy grail for CCNA candidates.
While the "Notes PDF" is the study companion, the "Flashcard PDF" is the testing engine. Jeremy famously developed a massive Anki deck (a spaced-repetition flashcard app). Many students export these decks to PDF to print them out.
If you were to download a "Jeremy IT Lab CCNA Notes PDF" (often found on his Patreon, GitHub repositories linked in his video descriptions, or community forums), you would find a structure that mirrors the exam blueprint perfectly.
If you are studying for the Cisco CCNA 200-301 certification, you have probably heard the name whispered in Discord servers, Reddit threads (r/CCNA), and YouTube comments like a sacred mantra.
It is important to clarify a distinction: Jeremy McDowell creates comprehensive flashcards and video slides. The legendary "Jeremy IT Lab Notes PDF" found in the wild is often a community-sourced artifact. It is the physical manifestation of his video curriculum—a PDF compiled by dedicated fans or aggregated from his downloadable resources, condensing hours of video into scannable text.
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.
This is a deep dive into the phenomenon of Jeremy's IT Lab, the community-driven ecosystem surrounding his notes, and why a simple PDF file has become the holy grail for CCNA candidates.
While the "Notes PDF" is the study companion, the "Flashcard PDF" is the testing engine. Jeremy famously developed a massive Anki deck (a spaced-repetition flashcard app). Many students export these decks to PDF to print them out. jeremy it lab ccna notes pdf
If you were to download a "Jeremy IT Lab CCNA Notes PDF" (often found on his Patreon, GitHub repositories linked in his video descriptions, or community forums), you would find a structure that mirrors the exam blueprint perfectly. This is a deep dive into the phenomenon
If you are studying for the Cisco CCNA 200-301 certification, you have probably heard the name whispered in Discord servers, Reddit threads (r/CCNA), and YouTube comments like a sacred mantra. Many students export these decks to PDF to print them out
It is important to clarify a distinction: Jeremy McDowell creates comprehensive flashcards and video slides. The legendary "Jeremy IT Lab Notes PDF" found in the wild is often a community-sourced artifact. It is the physical manifestation of his video curriculum—a PDF compiled by dedicated fans or aggregated from his downloadable resources, condensing hours of video into scannable text.
Simple, quick, and useful right out of the gate — designed to open-and-go.
Launch epanet-js now