System Requirements for OJS 3.3

To run the latest release of OJS 3.x, your web server will need:

• PHP 7.3 or later with MySQL, MariaDB, or PostgreSQL support
• A database server: MySQL/MariaDB 4.1 or later OR PostgreSQL 9.5 or later
• UNIX-like OS recommended (such as Linux, FreeBSD, Solaris, Mac OS X, etc.)

System Requirements for OJS 2.x

To run OJS 2.x, your web server will need:

• PHP 5.x or later (including PHP 7.x) with MySQL/MariaDB or PostgreSQL support
• A database server: MySQL/MariaDB 4.1 or later OR PostgreSQL 8.0 or later
• UNIX-like OS recommended (such as Linux, FreeBSD, Solaris, Mac OS X, etc.). OJS 2.0.2 and above supports Windows servers (including IIS).