Plug-Ins allow for the Application Express framework to be readily extended with custom item types, region types, processes and Dynamic Actions. Once defined, plug-in based components are created and maintained very much like standard Application Express components. Plug-ins enable developers to create highly customized components to enhance the functionality, appearance and user friendliness of their applications.
The APEX Community have developed a large range of different plug-ins.
Note: Plug-ins are not part of Oracle Application Express software and are therefore not supported by Oracle Support in any way. Oracle has done no review or vetting of any of the plug-ins available from these third party sites. Any issues with the plug-ins can be discussed on the APEX World Plug-In Slack Channel or on the Application Express Forum.