Java and Android Database - fast and lightweight without any ORM
CDC Connectors for Apache Flink
DBMS supporting graph, document, full-text and geospatial models
Apache IoTDB
A powerful, cross platform, SQL database system
Toolkit for working with and mapping geospatial data
A Java SQL client for any JDBC compliant database
An object relational-mapping (ORM) library for Java
Relational Database
Database Subsetter and Relational Data Browser
Database Replication, Filtered Synchronization, and Transformation
Free Web-Based Church Management Database Software
Java persistence using JDO, JPA or REST
A generator of DTO, Model, and DAO classes to access relational DB
The modern AI‑first database client for developers DBAs and analyst
Automated tests with databases: prep, verify, restore tables
Relative Examples and Resources of iBoxDB, etc...