PathML is a toolkit supporting each step in the computational pathology research workflow.


We aim to accelerate research, reduce barriers to entry for new researchers, and promote open science in computational pathology.


We provide pre-built tools, public datasets, and documentation to allow anyone with beginner proficiency in Python to get started.

For advanced users, we provide a modular set of tools which can be composed into custom workflows, as well as complete API documentation to enable implementation of new features or tools on top of PathML.


The GNU GPL v2 version of PathML is made available via Open Source licensing. The user is free to use, modify, and distribute under the terms of the GNU General Public License version 2.

Commercial license options are available also. Please contact us at PathML@dfci.harvard.edu