Gretel is a test data generation tool that specializes in creating synthetic data while preserving the statistical properties of real data. It uses advanced techniques, such as differential privacy, to ensure data protection and compliance. Gretel supports a variety of use cases, including application testing, analytics, and machine learning, and offers API integration for easy integration with other tools and services. With its user-friendly interface, Gretel allows users to generate realistic synthetic test data while maintaining data privacy and compliance.