Write a Review Add Product

HSQLDB — RDBMS (Open Source)

HSQLDB is an open-source RDBMS solution from HSQL Development Group. Compare it against 85 other RDBMS tools on FreeSoftwareX — by features, licensing and price — and request a quote or demo free in 2026.

What is HSQLDB?

HSQLDB is open source — its source code is publicly available and free to use, modify and self-host, usually with an active community and no licensing fees. It is categorised under RDBMS and published by HSQL Development Group. Buyers typically evaluate HSQLDB when they need a dependable RDBMS option and want to weigh the trade-offs between free, open-source and paid tools before committing.

HSQLDB alternatives

If HSQLDB isn't the right fit, compare these RDBMS alternatives side by side:

4th Dimension (4D)Actian VectorActian Zen (PSQL)Adabas DAltibaseAmazon AuroraApache DerbyApache IgniteCA DatacomCA IDMSCUBRIDClarionCockroachDBCrateDB

Frequently asked questions

Is HSQLDB free?
Yes. HSQLDB is open source and free to use, with no purchase cost for the core product.
What are the best HSQLDB alternatives?
Popular RDBMS alternatives to HSQLDB include 4th Dimension (4D), Actian Vector, Actian Zen (PSQL), Adabas D. See the full list of RDBMS on FreeSoftwareX.
What type of software is HSQLDB?
HSQLDB is an open-source RDBMS tool developed by HSQL Development Group.

← All RDBMS · More from HSQL Development Group

Browse live leads →List your business free