Open Tree of Life constructs a comprehensive, dynamic and digitally-available tree of life by synthesizing published phylogenetic trees along with taxonomic data. The boxes below link to pages about different ways to use open tree.

OpenTree is back online!
Study curation has now been restored. While repairing our systems after the recent hack of our servers, we've also implemented new features for user privacy and GDPR compliance.
Please contact us via gitter with any questions.

Browse the synthetic tree and taxonomy. You can get information about the source of the information and provide feedback.

In addition to providing feedback on the tree and taxonomy, you can contribute to the synthetic tree by uploading trees through our curation interface.

We provide web-service APIs to make our data and tree estimates available for use by anyone. Click this box to see workshop materials, tutorials, and examples of ways to use the Open Tree of Life.

💻 👩‍💻      Interested in contributing source code to the Open Tree of Life? Clicking this box takes you to our developers' resources page.