# Development

cBioPortal is an open source project hosted on [Github](https://www.github.com/cbioportal/cbioportal).  The core team will
consider pull requests from any source.

The following section describes how to set up a development environment and start contributing.

Note that cBioPortal is split into a backend project (api) and a frontend project which are kept in separate repositories.

- [Frontend](http://www.github.com/cbioportal/cbioportal-frontend)
  (Typescript, React, Mobx)
- [Backend](http://www.github.com/cbioportal/cbioportal)
  (Java, Spring, ClickHouse, MongoDB)

If you are interested in coordinating the development of new features, please contact cbioportal@cbioportal.org or reach out on https://slack.cbioportal.org.