For direct access to the code, please refer to the Git and GitHub documentation.
The source code in the FieldTrip toolbox is split over multiple directories reflecting its modular organization. This facilitates a separation between high-level functions that do data bookkeeping, and low-level functions that focus on the algorithms.
We use a combination of tools (GitHub, website, mailman, Twitter, Facebook) that are loosely linked to each other; for example, an update to the code is automatically tweeted. An overview is presented on the integration page.