IBM DB2 is described as 'DB2 offers industry leading performance, scale, and reliability on your choice of platform from Linux to z/OS. DB2 supports storing XML and relational data and offers SQL PL and PL/SQL procedural languages' and is a relational database in the development category. There are more than 50 alternatives to IBM DB2 for a variety of platforms, including Windows, Linux, Mac, Web-based and Self-Hosted apps. The best IBM DB2 alternative is DBeaver, which is both free and Open Source. Other great apps like IBM DB2 are SQLite, PostgreSQL, MySQL Community Edition and MariaDB.