You are allowed to use the plugin for non-commercial purposes. You are not allowed to use the plugin for earning money in any way. You are not allowed to use the plugin on servers or networks which sell ranks, ingame money, ingame items or other things for real money. You are allowed to view the plugin's code, modify it and use the modified code on your server for non-commercial purposes. You are allowed to distribute modified versions of the plugin if you provide it free of charge, but you have to specify that your plugin is based off our plugin. You are allowed to distribute our plugin with your plugin, if our plugin is required by your plugin and your plugin is provided free of charge. You have to mention that your plugin includes our plugin.