KBFS: A distributed filesystem with end-to-end encryption and a global namespace based on Keybase.io service that uses FUSE to create cryptographically secure file mounts. Lustre Cluster filesystem will use FUSE to allow it to run in userspace, so that a FreeBSD port is possible.[11] However, the ZFS-Linux port of Lustre will be running ZFS's DMU (Data Management Unit) in userspace.[12] MinFS: MinFS is a fuse driver for Amazon S3 compatible object storage server.