S4FC is a utility software designed for the operation of Thorlabs' S4FC fiber-coupled laser sources. This software package includes a user-friendly graphical interface (GUI) that simplifies the control and management of these laser devices. In addition to the GUI, S4FC provides essential drivers that ensure seamless communication between the software and hardware, facilitating efficient operation.

Moreover, S4FC comes with a LabVIEW and C++ Software Development Kit (SDK) that enables advanced users to perform secondary development. This feature allows for customization and integration of the laser systems into larger projects or workflows. Being a free tool, S4FC serves as a valuable resource for researchers and professionals working with fiber-coupled laser technology.