A fast SQL database that can run embedded or a server mode with support for transactions, encryption, full search, etc. Storage can be disk-based or in-memory.

Artifacts using h2 version 1.3.176 (431)
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Opencast :: Kernel
Last Release on Jan 29, 2026
SonarQube :: Batch
Last Release on Apr 8, 2016

Core components shared to batch and server
Last Release on Apr 8, 2016

Geohash encoding and decoding utilities including bounding box coverage.
Last Release on Apr 16, 2024
clojure.jdbc is a library for low level, jdbc-based database access.
Last Release on May 20, 2016
Matterhorn Kernel
Last Release on Oct 30, 2018
skinny-common
Last Release on Dec 14, 2022
Flowable IDM Engine
Last Release on Feb 27, 2026
Symmetric JDBC
Last Release on Nov 26, 2025
Data Pipeline plugin that contains all product agnostic functionality.
Last Release on May 6, 2026