FUSE-T

The library provides a macOS‑only runtime that lets developers create user‑space filesystems without requiring a kernel extension. It implements the FUSE interface through a local server that integrates with the native mount flow, allowing filesystems to be built, packaged, and distributed on current macOS releases. The design supports the three backends—NFS, SMB, and native FSKit on macOS 26+—and includes handling of extended attributes, file locks, and other macOS‑specific behavior, delivering stable mount and unmount operations using built‑in tools.

Target users are developers of filesystem projects that need to ship user‑space implementations compatible with modern macOS security and installation expectations. The runtime works with existing FUSE codebases, supporting both libfuse2 and libfuse3 APIs, and can be embedded within an app bundle for App Store distribution. It offers a practical foundation for real‑world filesystem workloads rather than experimental demos.

The project is released under a free‑for‑personal‑use license, with a commercial option for embedding and redistribution. Documentation, installers, and source code are hosted on GitHub, and the package is available via Homebrew Cask.