Apache OpenOffice Base
Base is a fully featured desktop database management system, designed to meet the needs of a broad array of users, from tracking a personal CD collections, to producing a corporate monthly departmental sales reports.
Libre Office Base
Base is a full-featured desktop database front end, designed to meet the needs of a broad array of users. Base caters to power users and enterprise requirements, providing native-support drivers for some of the most widely employed multi-user database engines: MySQL/MariaDB, Adabas D, MS Access and PostgreSQL. In addition, the built-in support for JDBC- and ODBC-standard drivers allows you to connect to virtually any other existing database engine as well.