Microsoft SQL Server is a feature-rich RDBMS providing a secure and scalable platform for data management, analytics, and business intelligence solutions.

A leading NoSQL database with a document-oriented approach, offering flexibility, scalability, and high performance for modern applications.

MySQL is an open-source relational database management system (RDBMS) widely used for efficiently storing, managing, and retrieving structured data.

PostgreSQL, often referred to as "Postgres," is a powerful, open-source relational database management system (RDBMS) known for its advanced features, extensibility, and adherence to SQL standards.

Redis is an open-source, in-memory data structure store that serves as a highly efficient and versatile caching and messaging broker solution.