 <p><a href="http://www.firebirdsql.org/" rel="nofollow noreferrer">Firebird embedded</a></p> <p>About:</p> <blockquote> <p>Firebird is an open source relational database offering many ANSI SQL-99 features that runs on Linux, Windows, and a variety of Unix platforms. Firebird offers excellent concurrency, high performance, powerful language support for stored procedures and triggers.</p> </blockquote>