HSQLDB - 100% Java Database
For years, HSQLDB has been Java developers' best choice for development, testing and deployment of database applications.
We have maintained our leading position through continuous
enhancements. A major development effort in the last 7 years has
resulted in version 2.3.0, the most advanced open source RDBMS for
small and medium sized databases.
HSQLDB SupportWare allows individual developers, corporations and organizations to support the maintenance and development of HSQLDB.
Participation in the program is by annual subscription.
Developer subscription - $100 or €80
Developer subscription covers one developer (the subscription can be made in the name of a company). Corporate subscription covers all the developers that work with HSQLDB in the organization. The suggested amounts for Premier Corporate subscription are the minimum recommended amounts. If you consider that your use of HSQLDB warrants a larger contribution, please use your discretion.
See also the separate section at the end of this page on Project Sponsorship.
It is in the interest of every developer and deployer that HSQLDB is actively maintained and improved. We have avoided licensing restrictions on the use and distribution of HSQLDB and would like to keep it this way.
The proceeds from subscriptions will fund development and support. The support element will be provided to subscribers only.
We will continue to provide free, voluntary support to Open Source project developers only. We may also answer simple questions from new, unsubscribed users if we have spare time.
How to join
Please subscribe to HSQLDB SupportWare now. We need many subscriptions and sponsorships to cover the current full-scale release cycle.
You can pay your annual subscription in either the US Dollar amount or the Euro amount, whichever is more convenient. There are two methods of payment:
Subscriptions are collected and allocated by the HSQLDB Project Maintainer, Fred Toussi. Your name and information is considered strictly confidential. If you wish, you can explicitly opt to include your name (developer or organization) in a list on this page, otherwise no reference to your name will be made.
Feature Sponsorship allows an organization to sponsor specific new features or improvements. If your organization would benefit from the addition of a new feature or capability to HSQLDB, you can fund its development after discussion and agreement with Fred Toussi, the Project Maintainer. Please send an email to fredt (at) users.sourceforge.net
Project Sponsorship For 2011, we also welcome corporate project sponsors to support the general development of the software. Project sponsors will be featured on our home page and can include their news and announcements.
How is the Project funded
All development and maintenance prior to 2005 was done voluntarily. Since 2005, SupportWare, sales of licenses for the HyperXtremeSQL product and professional support services, have all contributed to the development effort. Full time development of HSQLDB has been very effective, with extensive new features added in version 2.0 and latest point releases. SupportWare is an essential component in continuing development.