Open Source Software Using HSQLDB

Office and Productivity

• OpenOffice 4
• LibreOffice 5
  
• Thaw - a Freenet GUI
• Onepoint - project management
• Borg - calendar and task tracking

Mathematics and Science

• Kepler scientific modeling and workflow
• SPECIALIST biomedical and general English lexicon

Web Portals

• Liferay - web portal and social office

Wiki

• XWiki - enterprise collaboration
  

Application and code development

• tongue-tied - multilanguage resource management for Java and other platforms

• Hammurapi - automates code review and quality control

Application Servers and Frameworks

• JBoss JEE server
• TomEE JEE server
• Jonas JEE server
• Openfire XMPP collaboration server

Other Software

• Verbos - verb conjugation

Open Source Software for use with HSQLDB

Frameworks

• Spring Framework
  

Object Relational Mapping Software

• Hibernate
  
• Open JPA - JPA
• DataNucleus - JDO3 and JPA2
• jIncarnate - compiles plain SQL into Java code that uses JDBC
• jOOQ - is a type-safe Java API for SQL which supports several database engines, using advanced SQL, including stored procedures and UDTs

Database Clustering and Replication Software

• C-JDBC- for clustered HSQLDB
• HA - JDBC- for clustered HSQLDB
• SymmetricDS- for clustered HSQLDB

Database Development and Admin Utilities

• Flyway - Database Migration and change management
• Liquibase - DB schema and data change management
• JAMon - JDBC monitoring and stats
• DiffKit - compare and diff data in database tables, supports several database systems and flat files
• SQL Workbench/J - GUI Database Manager
• DBeaver - GUI Database Manager with support for HSQLDB SQL routines
  

Database Management Systems Incorporating HSQLDB

• Volt DB - next generation RDBMS for high-performance OLTP uses HSQLDB for SQL processing
• HyperXtremeSQL - very high performance Java database engines based on HSQLDB 2.x

Commercial Software Using HSQLDB

Mathematics and Science

• Mathematica - leading maths software

Issue Tracking

• Jira
• TrackStudio

Wiki

• Confluence

Software Build + Integration Management

• Team City by JetBrains

Project Management  / Team Collaboration

• Yoxel PCM is a desktop application that helps you succeed with projects by leveraging project-based email communication and enhancing team collaboration experience.

eCommerce

• hybris supplies Product Information Management software for the media-neutral management of product information and its use in both e-commerce and printed catalog channels.
  By default HSQLDB is bundled as backing database for our J2EE persistence layer optimally
  suited for easy distribution.
  

Mobile Application Development

• MobiForms mobile application development tool offers an
  intuitive graphical drag and drop development environment. A user can deploy and run a full blown Java application on
  Pocket PC, Windows CE and Windows Mobile running against a local mobile
  HSQLDB database.
  
  

Extent of use of HSQLDB

• HyperSQL is used in well over 2000 open source projects (Maven stats)
• HyperSQL was the 5th most popular RDBMS (after MySQL, Oracle, PostgreSQL and SQL Server) by usage from JVM in a survey covering over 600 companies during 2016.
  

• Sormula - data access and simple object relational mapper