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License and brand

Code — Elastic License 2.0​

Tusab's source code is source-available under the Elastic License 2.0: anyone can read, audit, run, and freely modify it for their own use. The one relevant restriction is not offering Tusab as a hosted/managed service to third parties.

External Pull Requests are not accepted at this time — see Contributing.

The "Tusab" brand​

The name "Tusab", the logo, and the associated visual identity are trademarks of CriAugu — Augusto Alves Brasil (CNPJ 65.131.075/0001-57), with a pending INPI registration. These trademarks are not covered by the code license — the code license is automatic and independent of trademark registration (Law No. 9,610/1998); INPI registration protects the name/logo separately.

What this means in practice​

You may use, copy, modify, and distribute the code in this repository under the terms of the license. You may not:

  • Use the "Tusab" name or logo in a fork, modified distribution, or derivative product in a way that suggests it's the official project or endorsed by CriAugu
  • Publish a fork on the same distribution channels (GitHub Releases, app stores) using the "Tusab" name

If you distribute a modified version, give the fork a different name and make it clear it's a derivative project, not affiliated with the original Tusab.

Third-party dependencies​

The full list of third-party libraries used and their licenses is in THIRD_PARTY_NOTICES.md in the repository.

Copyright © 2026 CriAugu — CNPJ 65.131.075/0001-57. Author: Augusto Brasil.