What was the first commercial software package to incorporate WYSIWYG?

The first commercial software package to incorporate WYSIWYG (What You See Is What You Get) functionality was Bravo, developed at Xerox PARC in the early 1970s. Although it was not widely available to the public, it laid the groundwork for later applications. The first widely recognized commercial software to utilize WYSIWYG was Apple’s MacWrite, released in 1984, which brought the concept to a broader audience with the introduction of the Macintosh computer.