Five doors.
One house.
Dangon builds things that are genuinely free: a K–12 learning world, an arcade, everyday file tools that never upload anything, and help for parents holding a school to an IEP.
What's insidePick your door
Every one of them is free and public, and not one of them asks you to make an account.
Dangon Learn
learn.dangon.coStructured lessons for Kindergarten through Grade 12 across every subject, curriculum-aligned mini-games, a maths tool hub and interactive worlds to wander through.
Dangon Games
games.dangon.coThe arcade, for all ages. Fifty-four games across ten genres, playable the moment the page loads — no signup, no download, and your scores and streaks stay in your own browser.
Dangon Tools
tools.dangon.coTwenty-two PDF, image and text tools that run entirely inside your browser. Nothing is uploaded, because there is no server to upload to — load the page, go offline, and every tool still works.
Dangon Help
help.dangon.coFree tools for parents navigating special education. Read an IEP against what the law actually requires, check a goal, work out a deadline, or build the letter — every claim carrying the citation it rests on.
Dangon Books
books.dangon.coFree online reading for every age, opening in the browser rather than asking you to download anything. The reader is built and the shelves are being filled — this door is not open yet.
What both doors promise
The same three rules hold whichever door of Dangon you walk through.
Free, with no catch
No paywall, no trial that expires, no premium tier hiding the good parts. An advocate costs $100–200 an hour; Help costs nothing.
Your files stay yours
Tools and Help read your files in your own browser — an IEP never leaves the machine it was opened on. Learn is built for classrooms, so ads there are contextual only, never personalised to a child.
Fast, and it works offline
Static, prerendered pages and Web Workers doing the heavy lifting. Load once and keep going without a connection.