Filesystem in Userspace (FUSE) is a simple interface for userspace programs to export a virtual filesystem to the Linux kernel. It also aims to provide a secure method for non privileged users to create and mount their own filesystem implementations.
fusermount
Mount and unmount FUSE filesystems
root@kali:~# fusermount -h
fusermount: [options] mountpoint
Options:
-h print help
-V print version
-o opt[,opt...] mount options
-u unmount
-q quiet
-z lazy unmount
fusermount3
Mount and unmount FUSE filesystems
root@kali:~# fusermount3 -h
fusermount3: [options] mountpoint
Options:
-h print help
-V print version
-o opt[,opt...] mount options
-u unmount
-q quiet
-z lazy unmount
mount.fuse
Configuration and mount options for FUSE file systems
root@kali:~# mount.fuse -h
usage: mount.fuse type#[source] destination [-t type] [-o opt[,opts...]]
mount.fuse3
Configuration and mount options for FUSE file systems
root@kali:~# mount.fuse3 -h
usage: mount.fuse3 type#[source] destination [-t type] [-o opt[,opts...]]