Open-source licences.
What Zen Staff is built on, and under which licences. Including what larger companies need to know.
- Built on T3 Code
MIT licence, kept intact.
- Remotion at 4+ people
Video packs need a company licence.
- FFmpeg source on request
Written offer, valid 3 years.
1. What Zen Staff is built on
The Zen Staff app is built on T3 Code, an open-source project published under the MIT licence. We keep the copyright notice and licence text as MIT requires; our changes belong to FORTITUDO VINCIT S.R.L. and stay under MIT too.
The hub and company memory (the team server) are written by us from scratch and use a different licence: the Sustainable Use License 1.0, the same as n8n. You may use and modify them free of charge for your company's internal use or personal use; you may not resell them or offer them to others as a hosted service.
The code is on GitHub: the app in ZenStaff/zenstaff (MIT), the hub and memory for self-hosting in ZenStaff/zenstaff-selfhost (Sustainable Use License 1.0).
2. T3 Code licence (MIT)
MIT License
Copyright (c) 2026 T3 Tools Inc.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.3. Main third-party components
| Component | Licence | Used for |
|---|---|---|
| T3 Code | MIT | The base of the Zen Staff app |
| Electron | MIT | The desktop app |
| Chromium | BSD-3-Clause and its components' licences | The rendering engine inside Electron |
| Node.js | MIT | The app's local server |
| React | MIT | The interface |
| Effect | MIT | Server logic |
| Lucide | ISC | Icons |
| Young Serif, Hanken Grotesk, IBM Plex Mono | SIL Open Font License 1.1 | Fonts |
| Graphiti | Apache 2.0 | Hosted company memory |
| Neo4j Community Edition | GPLv3 | Hosted memory database, run as a separate server |
| FFmpeg | GPL | Video and audio in the video packs, a separate program |
| Remotion | Remotion License | The video packs |
| Claude Code, Codex CLI | Anthropic's and OpenAI's terms respectively | The agents; installed from their vendors |
The complete list of dependencies and their licences ships inside the app, in the licence files included with it.
4. Remotion and companies of 4 or more people
The video packs use Remotion. The Remotion licence is free for individuals and companies of up to 3 people, but requires a company licence for companies with 4 or more people. If your company has 4 or more people and uses the video packs, it needs its own Remotion company licence, bought from Remotion (remotion.dev). The other Zen Staff features do not depend on Remotion.
5. FFmpeg and source code
The app includes an FFmpeg build licensed under the GPL. FFmpeg is a separate program that the app starts for video and audio processing; it is not linked into the app's code.
Written offer: on request we will send you the complete and exact source code of the FFmpeg build we ship, with its build scripts, for no more than the physical cost of providing it. The offer is valid for 3 years from our last distribution of that build. Send requests to [email protected].
6. Neo4j and Graphiti
Hosted company memory uses Graphiti (Apache 2.0) and Neo4j Community Edition (GPLv3). Neo4j runs as a separate server that the memory connects to over the network; the Zen Staff app does not include Neo4j. On self-host you install them from their official images, under their own licences.
7. The AI agents
Claude Code (Anthropic) and Codex CLI (OpenAI) are installed from their vendors and used under their terms, with your own account. Zen Staff does not modify them or redistribute them under another licence.
8. Library packs
Each pack in the library has its own licence, chosen by its author: MIT (default), CC BY 4.0, Apache 2.0 or CC0. The licence is shown on the pack card. Packs made by Zen Staff ship with the app and are free to use with it.