An add-on is an installable component that supplements or enhances the functionality of JIRA in some way. For example, the JIRA Calendar Plugin is an add-on that shows the due dates for issues and versions in calendar format. Other add-ons are available for connecting JIRA to Bamboo, developing for JIRA, and accessing Atlassian support from JIRA.
JIRA comes with many pre-installed add-ons (called system add-ons). You can install more add-ons, either by acquiring an add-on from the Atlassian Marketplace, or by uploading an add-on from your file system. This means that you can install add-ons that you have developed yourself. For information about developing your own add-ons for JIRA, see the JIRA Developer documentation.
To enable various JIRA Gadgets, see Configuring the default dashboard.
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You may notice that the terms 'app', 'add-on' and 'plugin' all appear in the Atlassian documentation and tools. While the terms are often used interchangeably, there is a difference. A plugin is a type of app (formerly known as an add-on) that can be installed into an Atlassian host application. Plugins are what developers create with the Atlassian SDK.
About the Universal Plugin Manager
The Universal Plugin Manager (UPM) is itself an add-on that you use to administer add-ons from the JIRA Administration console. UPM works across Atlassian applications, providing a consistent interface for administering add-ons in JIRA, Confluence, Crucible, Fisheye, Bitbucket Server, or Bamboo.
UPM comes pre-installed in recent versions of all Atlassian applications, so you do not normally need to install it yourself. However, like other add-ons, the UPM software is subject to regular software updates. Before administering add-ons in JIRA, therefore, you should verify your version of the UPM, and update it if needed.
You can update UPM or any add-on from the UPM's own add-on administration pages. In addition to updating UPM, you can perform these tasks from the administration pages:
- Install or remove add-ons
- Configure add-on settings
- Discover and install new add-ons from the Atlassian Marketplace
- Enable or disable add-ons and their component modules, including "safe mode"
If the add-on request feature is enabled in your Atlassian application, non-administrative users can also discover add-ons in the Atlassian Marketplace. Instead of installing the add-ons, however, these users have the option of requesting the add-ons from you, the administrator of the Atlassian application.
For more information on administering the add-on request feature or performing other common add-on administration tasks, see the Universal Plugin Manager documentation.