E-Vory

Terms of Use

Last updated: September 2026

The short version. E-Vory is free, open source and provided as is. It suggests a programme; checking it and deciding what to do with it is your job. There is no warranty, and no promise that the site will stay up. Everything you load stays on your device, so the data you handle stays your responsibility.

1. Agreement

By using E-Vory you accept these terms. If you do not accept them, please do not use it. They apply to the hosted site; if you run your own copy of the source, the MIT License in the repository governs that copy.

2. What E-Vory is

E-Vory is a browser-based tool that proposes a new order for a presentation programme. It is offered free of charge, with no account, no subscription and no paid tier. It is a personal open-source project, not a commercial product or a service with contractual guarantees, and it is not affiliated with any institution, university or employer.

3. Licence

E-Vory's source code is published under the MIT License. You are free to use, copy, modify, publish and distribute it, including commercially, provided the copyright notice and licence text are kept. The source and the full licence are at github.com/frianasoa/evory.

The E-Vory name and logo are not covered by that licence. You may run and fork the code freely; please do not present a modified version as the official E-Vory.

4. Acceptable use

You agree not to:

  • Use E-Vory for anything unlawful, or in breach of rules that apply to you or your organisation
  • Load personal data you have no right to handle
  • Attempt to disrupt or abuse the site or the service hosting it
  • Present E-Vory's output as an authoritative or official decision when it is not

5. Your data and your responsibility

E-Vory processes your files entirely on your own device and does not upload them — see the Privacy Policy. Because of that, you remain solely responsible for:

  • Having the right to use the names, availability and comments you load
  • Complying with the data-protection rules that apply to you
  • Keeping your own copies — E-Vory has no backup of anything, and cannot recover lost work for you
  • Clearing the data saved in your browser when you are done, especially on a shared computer

6. The result is a proposal, not a decision

E-Vory proposes an arrangement based on the files and settings you give it. It cannot know about anything you did not tell it — a late change of room, a person who must leave early, an unwritten convention about who chairs what, a mistake in the source spreadsheet.

Check the result before you publish it. On a large programme the solver may reach its time limit and return the best arrangement it found rather than the best that exists, and the report tells you when that happens. You are responsible for reviewing any programme you circulate, and for the consequences of acting on it.

7. No warranty

E-Vory is provided “as is” and “as available”, without warranty of any kind, express or implied, including but not limited to warranties of merchantability, fitness for a particular purpose, accuracy and non-infringement. No guarantee is made that it is free of errors, that it will read every spreadsheet correctly, or that any result it produces is optimal, valid or suitable for your situation.

8. Limitation of liability

To the fullest extent permitted by law, the author shall not be liable for any direct, indirect, incidental, special or consequential damages arising from the use of, or inability to use, E-Vory — including disrupted schedules, missed sessions, lost work, lost data or reputational harm — even if advised of the possibility. E-Vory is supplied free of charge and this reflects that.

Nothing in these terms limits liability that cannot be limited under the law that applies to you.

9. Availability

There is no service-level commitment. The site may be changed, interrupted, moved or taken down at any time without notice. If that matters to you, the whole tool is a static site: clone the repository and host or run your own copy, which is an explicitly supported use.

10. Third-party services

The optional Google Sheets import sends a request from your browser directly to Google, and is subject to Google's own terms and privacy policy. E-Vory is not affiliated with Google. All other functionality works without any third-party service.

11. Third-party components

E-Vory is built on open-source work, used under its own licences:

The full dependency list, with versions, is in the repository. These components are the property of their respective authors, and their licences continue to apply to them.

12. Changes to these terms

These terms may be updated as E-Vory changes. The date at the top will change with them, and every revision is visible in the project's public history. Continuing to use E-Vory after a change means you accept the updated terms.

13. Contact

Questions about these terms can be raised as an issue on GitHub.