The WebUnits API offers programmatic data synchronization to and from WebUnits, a time-tabling software used as an agenda tracking and class registration system for educational institutions. Using HTTP calls with JSON serialization, developers can implement WebUnits functionality over the internet. The interface is constructed with the Python Django web framework, and uses PostgreSQL as a backend. Typically, the resources take about 5 seconds to update data across all platforms. The API is developed and supported by Austrian-based Gruber & Petters GmbH, developers of educational time-tabling software.