Traccar uses Git repositories to manage the source code. All repositories are public and hosted on GitHub. Each project and app has its own dedicated repository. Below you can find links for the main repos. For other repositories check Traccar organization on GitHub.
The latest source code from master branches is not guaranteed to be stable. It is recommended to use binary packages from downloads. If you decide to use source code, it is recommended to use the latest tag instead of a master branch.