In Computing
- Hardware functionality scan, a security mechanism used in Microsoft Windows operating systems
- Hi Performance FileSystem, a file system used by the HP-UX operating system
- Hierarchical File System, a file system used by Apple Macintosh computers
- Hierarchical File System, a file system used by z/OS and earlier operating systems on IBM System z and earlier computers; unrelated to the Apple file system of the same name
- HTTP File Server
- FHFS, a software bundle of HFS adding FTP, SSL, and a variety of features.
Read more about this topic: HFS