License library / Copyleft software
GNU General Public License v2.0 only
Run, study, change and share the software, including commercially. If you distribute it or a work based on it, you must do so under the GPL with the corresponding source.
SPDX GPL-2.0-only Version 2.0 Official text
Uses at a glance
| commercial use | Permitted |
|---|---|
| production deployment | Permitted |
| modification / derivatives | Permitted |
| redistribution | Permitted |
| sublicensing | Prohibited |
| AI model training | Needs human review |
| inference-time use (RAG, prompts, generation) | Permitted |
Why some uses need review
AI model training. The license grants broad rights but attaches conditions (such as keeping notices) to copies and adaptations. Whether a trained model, or its output, is a copy or adaptation that carries those conditions is legally unsettled, and in some places training may fall under an exception such as fair use. A human reviewer should confirm this use for your case.
Duties
- give attribution / keep the notice
- license notice
- state changes
- release distributed derivatives under the same license
- provide source code with distributed derivatives
Notes
- Sublicensing is not allowed; every recipient receives a license from the original licensor.
- Running the software, including as a network service, does not by itself trigger the duty to share source; distributing copies does.
- GPL-2.0-only code cannot be combined with GPL-3.0 or Apache-2.0 code in one distributed work.
Resources under this license
No resource in the registry is published under this license yet.
For agents
curl -s https://www.rightshold.com/v1/licenses/check -H 'content-type: application/json' \
-d '{"license":"GPL-2.0-only","intended_use":{"commercial_use":true,"deployment":true}}'Reading version 2026-10-09 by the Rightshold rights desk; reference hash 74f48e9f9d6cc88e5a22db010c8e00436c187d008381bdf5eb8a0e0d796e49f9 identifies this license version. The license text governs; this is not legal advice.