The Hippocratic License

An Ethical License for Open Source Projects

For too long, we as software developers have divorced ourselves from the consequences of the code that we write. We have told ourselves that development is a pure and abstract pursuit, and have spent our careers writing programs with the goals of clarity, conciseness, readability, performance, and elegance.

But we are starting to realize that the software that we create has a real and lasting impact on the world in which we live.

Politics and software are so tangled that they cannot be reasonably separated. Consider the GPS software that tells you how to get to a restaurant; it’s also used to direct military drones to their targets. The facial recognition software that unlocks your phone? It’s being used to record, track, and target the activities of political dissenters.

All of these technologies are inherently political. There is no neutral political position in technology. You can’t build systems that can be weaponized against marginalized people and take no responsibility for them.

One of the delightful things about code is discovering its utility in novel situations. But if those novel situations involve harming other people, we can and should feel responsible. So what can we do about it?

Open source licenses have long been the primary tool for promoting the use of our software under our own rules and conditions. In the past these licenses were used to allow the free distribution, modification, and use of our software. But there is nothing stopping us from taking this further.

Introducing the Hippocratic License: an Ethical Source license that specifically prohibits the use of software to violate universal standards of human rights, and embodying the Ethical Source Principles.

Hippocratic License 3.0

You can view and download the Hippocratic License 3.0 (HL-FULL) here:

The core license provides protections for universally recognized human rights, including specific provisions for Indigenous rights. We are also developing optional modules that focus on specific areas of concern, such as environmental justice or labor rights. These modules, powered by an interactive license builder, will empower adopters to customize the Hippocratic License to reflect the needs and challenges of their particular communities.

The HL3 license builder with optional modules will be available for use in early 2022.

Development of the Hippocratic License 3.0 was led by Sameeul Haque, an IP and human rights attorney with OES partner Corporate Accountability Lab (CAL), in consultation with a special-purpose working group that included other ethical source license creators as well as open source maintainers.

Hippocratic License 2.1

You can view and download the 2.1 version of the Hippocratic License here:

Using the Hippocratic License

Simply make a copy of the text of the license and enter the copyright date and name of the copyright holder. Put this license file (e.g. in the root directory of your project repository and include it with the distribution of your software.