H2 is an embeddable RDBMS written in Java
Database subsetting and relational data browsing tool
A Java SQL client for any JDBC compliant database
Relational Database
AI-driven database tool and SQL client
Database migrations made easy
CDC Connectors for Apache Flink
CrateDB is a distributed and scalable SQL database
Database connection pool written in Java
General-purpose bitemporal database for SQL, Datalog & graph queries
Ebean ORM
jdbi is designed to provide convenient tabular data access in Java
MyBatis SQL mapper framework for Java
PolarDB-X is a cloud native distributed SQL Database
An open source SQL database designed to process time series data
Universal HTAP Engine
A generator of DTO, Model, and DAO classes to access relational DB
DBMS supporting graph, document, full-text and geospatial models
Mirror of Apache Phoenix
The open big data serving engine
ReplicaDB is open source tool for database replication
Apache Iceberg
Open source transactional distributed database
Conductor is an event driven agentic workflow engine for AI agents