Currently in JDeveloper we don´t have a tool for import/export our external tools.
But if you have a custom external tools and you wish export to another JDeveloper it´s easy.
The IDE save the configuration´s tools in the next path
- C:\Users\[your user]\AppData\Roaming\JDeveloper\[system11.1.1.x..xx.xx.xx]\o.jdeveloper
In the file product-preferences.xml.
Only you should copy this file in the folder o.jdeveloper of the installation where you wish import the external tools.