HSQLDB
8.1#2 in relational databasesFrom $100 a yearFree planAPILinuxmacOSSelf-hosted
VisitHSQLDB vs redb
What both publish
| Fact | HSQLDB | redb |
|---|---|---|
| Concurrency | The engine is multithreaded and offers lock-based, MVCC and hybrid transaction-control models. | MVCC allows concurrent readers and a writer without blocking. |
| License | HSQLDB source and binaries use permissive BSD-based licenses, with separate terms for legacy Hypersonic SQL code. | The repository lists Apache-2.0 and MIT licenses. |
| Maker | HSQLDB is developed and published by The HSQL Development Group, formed in 2001. | The project homepage credits Christopher Berner. |
| Product | HSQLDB is a Java-based relational database engine with in-memory and disk-based tables, supporting embedded and server modes. | redb is a portable, high-performance embedded key-value store written in pure Rust. |
HSQLDB plans
- Developer subscription$100 a year
- Basic Corporate subscription—
- Premier Corporate subscription$2,500 a year
- HSQLDB softwareFree
- HSQLDBFree
- Developer SupportWare$100 a year
redb plans
No prices published.
Pick HSQLDB if…
HSQLDB may suit developers and organizations seeking a self-hosted Java database with embedded or server operation. Its listed tools and integrations may also be relevant to teams using the named Java and database projects.
Pick redb if…
You want what its maker publishes above — check its page for the details.