NLS (oN-Line System) Demonstration

Douglas Engelbart publicly demonstrated NLS, showcasing a system with hypertext, collaborative editing, mouse input, and networked interaction. It was a comprehensive suite for augmenting human intellect.

Significance

While not an 'IDE' in the modern sense, NLS was arguably the first integrated working environment for manipulating information, pioneering concepts that would be central to future IDEs like hypertext linking, structured text editing, and interactive feedback. It showcased the potential for an integrated workflow.