Open Source
License
OASIS is free and open-source software released under the GNU Affero General Public License v3.0.
GNU Affero General Public License v3.0 (AGPL-3.0)
Copyright © 2025–2026 Max M. Lang and contributors.
The AGPL-3.0 is a strong copyleft license that guarantees users the freedom to use, study, modify, and distribute the software — with one important addition over the standard GPL: if you modify OASIS and offer it as a network service (e.g. a hosted SaaS product), you must make your modified source code available to all users of that service.
The full legal text of the license is available at gnu.org/licenses/agpl-3.0 and in the LICENSE file in the repository.
What This Means in Practice
✓ Academic & research use
Use OASIS freely in your research — whether self-funded, grant-funded, or institutionally supported. Run studies, collect data, publish results. No special permission needed; just cite the project in your publications.
✓ Modify & extend
Fork the code, add features, fix bugs, adapt it to your workflow. If you distribute your changes or offer them over a network, share the source under the same AGPL-3.0 terms.
✓ Self-host for your organisation
Deploy OASIS on your own servers for internal use — universities, research institutes, NGOs, or companies — without any obligation to publish your modifications, as long as you are not offering the service to third parties.
⚠ Network-service requirement
If you modify OASIS and make it available over a network (e.g. as a commercial SaaS offering), you must provide the complete corresponding source code to all users of that service under the AGPL-3.0. This is the key mechanism that prevents commercial free-riding while keeping the ecosystem open.
Why AGPL-3.0?
OASIS was previously released under the OASIS Non-Commercial Research License (ONCRL). We moved to the AGPL-3.0 because it is a well-understood, OSI-approved license that removes friction for academic users — no grant-clause ambiguity, no need to ask permission — while still protecting the project against commercial SaaS exploitation through the network-service copyleft provision.
Citation
Citation is appreciated but not legally required by the AGPL-3.0. If you use OASIS in published work, we would be grateful if you cited the project. BibTeX and DOI details are available in the repository README.