How to build themes, write plugins and develop new features for OJS, OMP and OPS.

Hosting and Deployment

Documentation for system administrators who want to run, deploy, maintain and upgrade our publishing software.

Administrator’s Guide

How to install and configure the application, import and export data, secure your server, download statistics, and troubleshoot problems. View Now

Versions: 3.4, 3.3 (Français)

How to Upgrade

A step-by-step guide for technical staff who want to upgrade to the latest version. View Now

Available in Español.

Release Notebooks

Essential guidance on changes for hosts, developers and contributors for each new release.. View Now

Notebooks: 3.4, 3.3, 3.2


Documentation for coders who want to customize our publishing software, write plugins or themes, and make coding contributions.


Everything you need to know to begin developing with OJS or OMP. View Now

Versions: 3.4, 3.3

Contributor’s Guide

Learn how to contribute to Open Journal Systems, Open Monograph Press, and Open Preprint Systems. View Now

Theming Guide

An introduction to building custom themes for OJS and OMP, for web developers who want to tailor the look of their journal or press. View Now

Available in Português.

Plugin Guide

Learn how to write plugins to customize almost anything in OJS and OMP. View Now

Versions: 3.4, 3.3


Learn how to write and run tests for the application or your own plugins and themes. View Now

Specifications and Reference Guides

Technical documentation about the REST API, database schema, the UI Library, and application source code.

REST API Usage Guide

Technical documentation for using the REST API in OJS. View Now

References: 3.4, 3.3, 3.2, 3.1

Database Schema

Reference documentation for the database schemas of OJS, OMP and OPS. View Now

UI Library

Component library, documentation and style guide for developers working with the user interface for OJS 3’s editorial backend. View Now

OJS Reference

This resource contains documentation generated automatically from the OJS source code. View Now

OMP Reference

This resource contains documentation generated automatically from the OMP source code. View Now

Open Journal Systems 2

Documentation for developers who are still working with OJS 2.

OJS 2.x Technical Reference

An extensive document regarding versions 2.x of the OJS platform. View Now

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