File System in Userspace (FUSE)

File System in Userspace (FUSE) is a technology that allows developers to create custom file systems without modifying the core operating system kernel. It operates in user space, meaning the code runs outside the kernel, providing greater flexibility and safety. FUSE enables the creation of virtual or networked file systems—such as encrypted storage, remote access, or cloud services—by translating file operations into user-level programs. This approach makes developing, testing, and deploying new file systems easier and safer while maintaining compatibility with standard file system interfaces.