At OJSpro, we provide a convenient overview of all available versions of Open Journal Systems (OJS) for download. OJS is an open-source software developed by the Public Knowledge Project (PKP) to manage and publish scholarly journals. All downloads link to official PKP sources for authenticity and security. We recommend using the latest stable version for new installations to benefit from the most recent features, security updates, and compatibility.

Important Notes:

• Always check system requirements before downloading. Recent versions (e.g., OJS 3.5+) typically require PHP 8.2 or higher, along with extensions like ext-curl, ext-gd, and MySQL/PostgreSQL.

• Older versions (e.g., OJS 2.x and 1.x) are retired and not recommended for production due to security risks. Use them only for archival or testing purposes.

• For installation help, visit our OJS Installation page. If you encounter issues, check our OJS Technical Support services.

• For hosting related assistance, visit our dedicated OJS Hosting Page for details. 

• For full historical releases, visit the official PKP OJS Release Archive.