Here you can see a list of all available inline controls in the CMS. You can manage the items in the list using the appropriate icon on the left side - edit (), delete () and export (). New inline controls can be created by using the New control link.
If there is a large amount of displayed inline controls, you can filter them by their Display name and Control Name using the filter above the list.
More resources can be found at Developer's Guide -> Development -> Inline controls -> Overview.