We released the software “HotFolder” for macOS in public. The software is developed as an example implementation of the FUJIFILM X Series and GFX System Digital Camera Control Software Development Kit” (SDK). Fujifilm released the SDK on April 23, 2021. The SDK helps software developers integrate the functionality of FUJIFILM X Series and GFX System cameras into any applications. The documentation in the SDK introduces our HotFolder app.