You can create and develop your own custom components for use in the Integration perspective of Talend Studio.
For further information about the creation and development of user components, see https://help.talend.com/display/KB/How+to+create+a+custom+component.
The following procedure applies only to the external components. For the preferences of all the components, see How to change specific component settings (Talend > Components).
The user component folder is the folder that contains the components you created and/or the ones you downloaded from TalendForge. To define it, proceed as follows:
In the tree view of the [Preferences] dialog box, expand the Talend node and select Components.
Enter the User component folder path or browse to the folder that contains the custom components to be added to the Palette of the Studio.
In order to be imported to the Palette of the Studio, the custom components have to be in separate folders located at the root of the component folder you have defined.
Click Apply and then OK to validate the preferences and close the dialog box.
The Studio restarts and the external components are added to the Palette.
This configuration is stored in the metadata of the workspace. If the workspace of Talend Studio changes, you have to reset this configuration again.