Avid Media Suite Pro (circa 1993) was, imho, the first combination of hardware/software that made it truly easy to
stick a board in a PC (well, a Macintosh IIfx) and edit full-frame video in the style of real-time non-linear editing.
The experience was just like using a word processor for text or photoshop for images -- a fluid editing experience
with simple cut and paste of video and audio. You could also easily injest and output your video from tape.
To get up and running, you simply plugged the Nubus board into the IIfx and loaded the software.
Although Avid shipped the Avid/1 in 1988, and Adobe shipped Adobe Premiere 1.0 in 1991, I think Avid's Media Suite
Pro set the original bar for accessible prosumer video editing.