Actually, there still is. But you don't hear about how someone is going to do a Harvard Graphics presentation. Still Harvard was the first. Before Windows came out, it was the software you used to create a presentation. Similar in design to PowerPoint (though I don't recall if it had the outline feature), it let you create presentations even before there was a good way to present them. But it remained the leader until Microsoft bundled PowerPoint with Office. Few people were willing to buy a stand-alone program for the one or two presentations they made a year, but if it was part of the Office Suite, anyway, you had it and learned to use it. Harvard Graphics just faded and was forgotten.
I doubt anyone remembers Zenographics Mirage; I only know about it because I used it for several years to create slides (the type you projected in a Kodak Carousel). I worked at a graphic design firm, and created what would now be PowerPoint slides for presentations (GE was our biggest customer). Mirage (and its graphic entry software, Ego) used a digitizer to trace images. I would put them onto the digitizer board and touch it with a pen to indicate the image. Mirage/Ego was not good with curves at all (It took me weeks to get a decent version of the GE logo* when they changed it**)
But Mirage was difficult for the average user to use, and you had to create each slide individually. Even such things as aligning text was a chore. It probably was never going to be popular software, but it did the job in the days before more advanced software was developed.
*Known in Schenectady and "the meatball." There was also the "flying meatball" with the words General Electric and the logo in the middle.**The logo was changed in the late 70s. No one outside of GE ever noticed the changes.