Custom User Interface or White-Labeled version of OpenEMR

This topic is focused on individuals or organizations that are building a custom user interface on top of the OpenEMR platform to provide a white-label version for specific healthcare niche specialties. The current known branding options include two logos on the login screen and some theme options.

It seems like many users of OpenEMR are in countries outside of the USA. Due to differences related to billing and other factors in these countries what are some of the changes you have implemented?

Does OpenEMR have a tracking system of some kind that provides insight into where OpenEMR is being used? For example, which locales are being used or which countries have implemented it.