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Open Journal Systems

Open Journal Systems (OJS) has been developed by the Public Knowledge Project. For general information about OJS and other open research systems, visit the PKP web site.

Build Status


You will find detailed guides in docs folder.

Using Git development source

Checkout submodules and copy default configuration :

git submodule update --init --recursive

Install or update dependencies via Composer (

composer --working-dir=lib/pkp update
composer --working-dir=plugins/paymethod/paypal update
composer --working-dir=plugins/generic/citationStyleLanguage update

Install or update dependencies via NPM:

# install [nodejs]( if you don't already have it
npm install
npm run build

If your PHP version supports built-in development server :

php -S localhost:8000

See the Documentation Hub for a more complete development guide.

Running Tests

We recommend using Travis for continuous-integration based testing. Review the Travis configuration file (.travis.yml) as a reference for running the test locally, should you choose to do so.

The tests include an integration test suite that builds a data environment from scratch, including the installation process. (This is the -b flag to the test script lib/pkp/tools/; this is also executed in the Travis environment.)

Bugs / Issues

See for information on reporting issues.


This software is released under the the GNU General Public License.

See the file COPYING included with this distribution for the terms of this license.

Third parties are welcome to modify and redistribute OJS in entirety or parts according to the terms of this license. PKP also welcomes patches for improvements or bug fixes to the software.


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