SessionZero is a free and open-source TTRPG "companion" application for managing characters, templates, data, and game sessions. It allows you to utilize any TTRPG system by being completely data-driven with user-generated content.
Features
Offline-First, No Strings Attached
By default, SessionZero works completely offline. Your data is stored locally on your machine. No account required. No phoning home. You have total ownership over your data.
Build Your Own Universe
You're the architect. Create templates for character sheets, define custom stats, and build your own collections (Datasets) of items, spells, monsters, or anything else your game needs. All data is stored in a human-readable format (SZF) that you can easily export, share, and back up.
Run Your Game, Your Way
Use SessionZero for your private, offline session notes, or host a live online game for your friends. As a Game Master, you can manage NPCs, track turns, and make real-time updates to character sheets. Players can join with their own characters and keep private session journals.
Open Source and Transparent
SessionZero is open-source software. We believe in the right to see what's going on behind the scenes and contribute to the project. No AI chatbots, no ads, no bloat. We promise.
The SessionZeroDB
SessionZero includes access to the SessionZeroDB, a free online repository of user-created templates and datasets. When online, the application can automatically find and download required content for you.
Who Is This For?
- Players who want total control over their character sheets and game data
- Game Masters who want to run any system whether it's a popular RPG, niche indie game, or their own homebrew content
- Anyone who's tired of apps that feel bloated, hard to learn, restrictive, or designed to constantly sell you something
Why use Godot?
- Godot Engine's editor is that it itself is made with Godot. This proves that it can be used to make flexible desktop applications, while providing game engine features like networking and an easy to use UI system.
- Godot is FOSS (Free and Open Source) software as well, which aligns with our core values.
- It is easy to learn and use, which allows for anyone to modify the application to their liking, creating "mods/plugins" and making SessionZero work for them.
The Bottom Line
SessionZero is about freedom, flexibility, and respecting your game. It's not here to sell you a bunch of digital add-ons or lock your data in a vault. It's a tool built to help you play.
Ready to Get Started?
Visit the Git repo to get the latest development build or view the source code!