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picoSQL is an Italian multi-user relational database management system with transactions support. Because it derives from a commercial project, it is already robust, fast, and rather complete.
You can download file releases of picoSQL project from List of release files
System RequirementsOperating System: All 32-bit MS Windows (95/98/NT/2000/XP), POSIX (Linux,BSD,Solaris etc..), Windows NT/2000, Windows XP
List of release files