Firebird vs HSQLDB

Firebird9.0Visit HSQLDB8.8Visit

Higher score Firebird #3 in Embedded Databases 9.0/10 Free plan Free plan✓ 0 of 2 features Visit Firebird

vs

HSQLDB #4 in Embedded Databases 8.8/10 Free plan Free plan✓ 0 of 2 features Visit HSQLDB

• Firebird fits best

  Embedded SQL with replication and HA

• HSQLDB fits best

  Feature-rich embedded SQL systems

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature	Firebird 9.0/10 Visit ↗	HSQLDB 8.8/10 Visit ↗
At a glance
Editor score	9.0	8.8
Ranking	#3 in Embedded Databases	#4 in Embedded Databases
Best for	Embedded SQL with replication and HA	Feature-rich embedded SQL systems
Pricing model	Free	Free plan + paid
Starting price	Free plan	$100/yr
Free plan	✓	✓
Free trial	—	—
Deployment	Self-hosted	Self-hosted
Support	Email, Community, Docs	Community, Docs
Integrations	6 integrations	4 integrations
Built for	Solo, Small business, Mid-market, Enterprise	Solo, Small business, Mid-market
Features Firebird 0/2 · HSQLDB 0/2
Encryption	Not checked yet	Not checked yet
Data synchronization	Not checked yet	Not checked yet
Specs
Supported platforms	Not checked yet	Not checked yet
Database model	Not checked yet	Not checked yet
Query interface	Not checked yet	Not checked yet
Maximum database size	Not checked yet	Not checked yet
Our review
Pros	Built-in replication supports read-only and read/write replicas Supports embedded, Classic, SuperClassic, and SuperServer architectures Broad connectivity across JDBC, .NET, ODBC, PHP, and Python	Supports embedded and client-server operating modes Offers SQL:2023, MVCC, 2PL, and hybrid transaction models Includes backups, versioned tables, and replication synchronization
Cons	Self-hosted deployment requires infrastructure and administration No managed cloud service is provided JSON support is not part of the current stable release	Self-hosted deployment requires environment management JDBC and ODBC are the listed connectivity options Optional SupportWare subscriptions add a separate support cost
Our verdict	Firebird is an open-source relational database management system for developers and organizations building embedded, departmental, and enterprise applications. It supports ANSI SQL and SQL92 compatibility, stored procedures, triggers,… Read the review →	HSQLDB, also known as HyperSQL, is an open-source relational database management system written in Java. It is aimed at Java developers building database-backed applications for development, testing, and deployment. Its embedded and… Read the review →

Strengths and trade-offs

• Firebird — where it wins

  • Built-in replication supports read-only and read/write replicas
  • Supports embedded, Classic, SuperClassic, and SuperServer architectures
  • Broad connectivity across JDBC, .NET, ODBC, PHP, and Python

  Where it doesn't

  • Self-hosted deployment requires infrastructure and administration
  • No managed cloud service is provided
  • JSON support is not part of the current stable release

• HSQLDB — where it wins

  • Supports embedded and client-server operating modes
  • Offers SQL:2023, MVCC, 2PL, and hybrid transaction models
  • Includes backups, versioned tables, and replication synchronization

  Where it doesn't

  • Self-hosted deployment requires environment management
  • JDBC and ODBC are the listed connectivity options
  • Optional SupportWare subscriptions add a separate support cost

• Firebird9.0/10 · Free plan

  A self-hosted SQL database with replication, backups, and multiple deployment architectures.

  Visit FirebirdFull verdict →
• HSQLDB8.8/10 · Free plan

  A feature-rich, self-hosted SQL database for Java applications.

  Visit HSQLDBFull verdict →