How to setup plugin system in Koha

Koha plugins allow users to add additional tools/features. We have to make some changes in Koha installation. Follow the steps to get ready Koha to facilitate plugins, Open a Terminal and execute following commands,

Create a directory for plugins,

sudo mkdir /var/lib/koha/plugins
cd /var/lib/koha
sudo chmod -R 755 plugins

Open the following file using your default text editor (e.g. Gedit, Mousepad)

sudo mousepad /etc/koha/sites/library/koha-conf.xml

Find the following lines in the file,

<plugins_restricted>1</plugins_restricted>
 

<enable_plugins>0</enable_plugins>

 

Change the value, 0 to 1 

 

<enable_plugins>1</enable_plugins>

Change the value, 1 to 0 

<plugins_restricted>0</plugins_restricted>

Save and close the file. 
Restart Apache,

sudo service apache2 restart

Goto Koha > Tools, and find Plugins.
You can upload and run plugins from here.
Please find few Koha plugins from the following link,
http://bywatersolutions.com/koha-plugins/

Reference
https://koha-community.org/manual/20.11/en/html/plugins.html