| ConditionalDescriptor | A simple interface implemented by any descriptors that support display conditions. |
| WebFragmentModuleDescriptor | A convenience interface for web fragment descriptors |
| WebItemModuleDescriptor | A web-item plugin adds extra links to a particular section. |
| WebSectionModuleDescriptor | A web-section plugin adds extra sections to a particular location. |
| WeightedDescriptor | A simple interface implemented by any weighted descriptors. |
| AbstractWebFragmentModuleDescriptor | An abstract convenience class for web fragment descriptors. |
| DefaultAbstractWebFragmentModuleDescriptor | Wrapper for WebFragmentModuleDescriptor, so that it could be extended
by application specific wrappers to provide additional methods. |
| DefaultWebItemModuleDescriptor | Represents a pluggable link. |
| DefaultWebPanelModuleDescriptor | The web panel module declares a single web panel in atlassian-plugin.xml. |
| DefaultWebSectionModuleDescriptor | Represents a web section - that is a collection of web items. |
| WebPanelRendererModuleDescriptor | The web panel renderer module is used to add web panel renderers to the plugin system. |
| WeightedDescriptorComparator | A simple comparator for any weighted descriptor - lowest weights first. |