CTSS First Hierarchical File System

The Compatible Time-Sharing System (CTSS) at MIT introduced one of the first hierarchical file systems, allowing users to organize files in a tree-like structure.

Significance

Pioneered the concept of structured data management for multiple users, laying theoretical groundwork for later file systems like Multics and UNIX.

Key facts

Year
1963
Type
invention
Location
Massachusetts Institute of Technology (MIT), USA