Coraline Ada Ehmke

Coraline Ada Ehmke

Developer, speaker, writer, podcaster, open source troublemaker.

Coraline Ada Ehmke

I am an internationally acclaimed speaker, writer, open source advocate, and developer with over 25 years of experience in software development. I work diligently to promote diversity and inclusivity in open source and the tech industry as a whole. I was recognized for my work with a Ruby Hero award in 2016. I am best known as the creator of the Contributor Covenant, the most popular open source code of conduct in the world, with over 40,000 adoptions including Linux, Golang, JRuby, Swift, F#, and Rails and the entire open source portfolios of companies like Apple, Microsoft, Google, and Intel.

In 2019 I released the Hippocratic License, a source-available license that prohibits software from being used in conjunction with human rights abuses. I also founded the Ethical Source Movement and its working group, to promote ethics in open source software.

I serve on the board of directors for Ruby Together, a non-profit that funds development of critical Ruby infrastructure like and I was formerly on the board of RailsBridge, an organization that teaches marginalized people web development with Ruby and Rails.

I am the co-author (with Naomi Freeman) of the upcoming book _The Compassionate Coder_, a guide to practicing empathy as a software developer. You can learn more about the book at

I record music in my home studio and have released six albums, all available widely on iTunes, Amazon, Spotify, and Google Play. You can hear samples and get links to listen or buy at

If you appreciate my work in the community and want to show your support, please consider supporting me on Patreon or Open Collective.

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Making an Impact