X-Road core is located in GitHub and the repository contains information about X-Road, source codes, its development, installation and documentation. Current repository is collaboration platform between VRK and RIA for joint development of X-Road. Cooperation is organized by the Nordic Institute for Interoperability Solutions (NIIS).
X-Road SDK is developer's package located in GitHub which contains for example code samples for basic operations in X-Road including communication with Security Server. It's the primary toolkit to get started with utilizing X-Road in service and application development.
The X-Road Knowledge Base contains how-to and troubleshooting articles, and new content is added regularly.
X-Road Academy provides online training for developers, users, operators, consultants, service providers and for anyone willing to learn more about the X-Road data exchange layer.
The X-Road Community has its own Slack channel to support discussion between developers. Please join the community and get access to the channel!