Download of hsqldb-2.3.1.zip (hsqldb-2.3.1.zip ( external link: SF.net): 7,710,129 octetos) will begin shortly. If not so, click link on the left.
HSQLDB is a relational database engine written in Java, with a JDBC driver, conforming to ANSI SQL:2008. A small, fast, multithreaded engine and server with memory and disk tables, LOBs, transaction isolation, multiversion concurrency and ACID.