Our team is working hard to build products and services built on our principles. However, we can’t do this alone. The long term success of open annotation depends on contributions from a wide array of sources.

Including yours! Here’s how you can join the effort.


We code and collaborate on GitHub. Our primary repository is h, and we keep ideas in our product-backlog repository.

We have long-form discussions on mailing list:

We chat in a public channel on Slack that anyone can register for and join to meet contributors and community members, hang out, discuss the project, and get questions answered. There’s also a public forum, which is a less technical place for users to ask questions and discuss needs.

Check out our documentation for the h code base to learn about what we’ve built