Reach for New Horizons
Free, open tools for games and technology
OpenMoon is an independent game & technology studio bringing converters, calculators and game guides under one roof. With no setup, everything runs in your browser.
Runs 100% in your browser — your data is never sent to a server.
One roof, three focuses
Tools that make your daily work easier, guides that clear your path in games, and the game projects we're building.
Free Tools
From Excel ↔ JSON conversion to merging PDFs, from IBAN validation to severance calculation — 96 tools. All account-free, unlimited and 100% in your browser — none of your files are uploaded to a server.
Game Guides New
Beginner guides, build recommendations and performance settings — up-to-date content for everything that wastes your time in games. Eleven guides are live, covering Valorant, Elden Ring, Europa Universalis IV & V, Hollow Knight: Silksong, No Man's Sky, Minecraft, Baldur's Gate 3 and Counter-Strike 2, including level-by-level guides for all twelve Baldur's Gate 3 classes and a party picker.
Browse the guidesOur games New
Sözyıldız, Moon Landing, Orbital Shot, Star Front and Shadowless — our own games are live: five free, account-free browser games, from daily word-building to a turn-based story RPG.
See the games
My Tasks
A personal to-do app with projects, subtasks, due dates and email reminders. With an optional account it syncs across your devices and lets you share lists and assign tasks — your data is kept only in your own account.
Open My TasksOur Privacy Principle
Our tools never upload your file to any server; all processing happens on your device. No hidden tracking, your data stays with you.
Featured
Featured tools for a quick start — see the Tools page for the full set.
Looks simple, takes its job seriously
Can't find the tool you're looking for?
Write to us — we prioritize and add frequently requested tools.