NLS
The oN-Line System (NLS) was a pioneering computer system developed by Douglas Engelbart and his team at the Stanford Research Institute (SRI International) between 1962 and 1968. NLS was the first system to integrate hypertext linking, word processing, email, windowing, and real-time collaborative editing in a single working environment — all demonstrated publicly in The Mother of All Demos in 1968. Unlike the batch-processing systems that dominated early computing, NLS was designed for interactive use: a user sitting at a display, manipulating information structures directly through a mouse and keyboard, with the computer responding in real time. The system embodied Engelbart's augmentation philosophy by treating the computer as a partner in intellectual work rather than a calculator.