TMFS - Apple's Time Machine fuse read only file system. sparsebundlefs - FUSE filesystem for reading macOS sparse-bundle disk images. mergerfs - Union filesystem geared towards simplifying storage and management of files across numerous commodity storage devices. gefs - Good enough file system. libfsapfs - Library to access the Apple File System (APFS). proper-lockfile - Inter-process and inter-machine lockfile utility that works on a local or network file system. Sanoid - Policy-driven snapshot management tool for ZFS filesystems. When combined with the Linux KVM hypervisor, you can use it to make your systems functionally immortal. UtahFS - Encrypted storage system that provides a user-friendly FUSE drive backed by cloud storage. (Article) (HN) gcsfuse - User-space file system for interacting with Google Cloud Storage. bindfs - FUSE filesystem for mirroring a directory to another directory, similarly to mount --bind. (Web) vmtouch - Portable file system cache diagnostics and control. (Code) Supertag - Tag-based filesystem, written in Rust, for Linux and MacOS. (Docs) DwarFS - Fast high compression read-only file system. vfs - Virtual filesystem library written in Go. dino - Distributed FUSE filesystem for small volumes. organize - File management automation tool. JuiceFS - Distributed POSIX file system built on top of Redis and S3. GoDFS - Simple Distributed FileSystem written in Go. (Article) TiFS - Distributed file system based on TiKV. HyperTag - Helps humans intuitively express how they think about their files using tags and machine learning. sandboxfs - Virtual file system for sandboxing. GitHub File System - With this filesystem you can use GitHub from your favorite shell and text editor. PiFS - Data-Free Filesystem. S3QL - File system that stores all its data online using storage services like Google Storage, Amazon S3, or OpenStack. Envfs - Fuse filesystem that returns symlinks to executables based on the PATH of the requesting process. GotenksFS - File system on top of your file system. Query-FS - Virtual filesystem implemented using FUSE in Common Lisp. (Talk) CrossFS - Direct-access cross-layered file system with support for concurrency. libfsrefs - Library and tools to access the Resilient File System (ReFS). netfuse - FUSE-based abstraction for networked filesystems. go-fsimpl - Go filesystem implementations for various URL schemes. ImpFS - Novel filesystem with some interesting features. rpg-cli - Your filesystem as a dungeon. nullfsvfs - Virtual black hole file system that behaves like /dev/null. ffs - File filesystem: mount semi-structured data (like JSON) as a Unix filesystem. (Web) (Tweet) fbox - Easy to use and maintain distributed filesystem written in Go. AppFS - Universal packaging format that is presented to the system as a filesystem (via FUSE). FastCFS - High performance distributed file system for databases, K8s and VM etc. Goofys - High-performance, POSIX-ish Amazon S3 file system written in Go. GeeseFS - High-performance, POSIX-ish S3 (Yandex, Amazon) file system written in Go. libzetta-rs - Stable interface for programmatic administration of ZFS from Rust. Fuse-Archive - Program that serves an archive or compressed file (e.g. foo.tar, foo.tar.gz, foo.xz, foo.zip) as a FUSE file system. Flatdata - Write-once, read-many, minimal overhead binary structured file format. AetherFS - Virtual file system for small to medium sized datasets (MB or GB, not TB or PB). Like Docker, but for data. (Web) ChubaoFS - Cloud native distributed file system and object store. edwork - Decentralized, distributed read-write filesystem. Libnvmmio - User-level file system designed for byte-addressable non-volatile memories. rusix - Distributed filesystem in Rust. zectl - ZFS Boot Environment manager for Linux. ZboxFS - Zero-details, privacy-focused in-app file system. (Web) gocryptfs - Encrypted overlay filesystem written in Go. Deark - Utility for file format and metadata analysis, data extraction, decompression, and image format decoding. vfile - Small and browser friendly virtual file format that tracks metadata (such as a file’s path and value) and messages.