The feature set of Microsoft Office, yes. But I think Google Docs took some reasonable steps backwards in features in exchange for a big leap forward in collaboration. (Or a few steps towards but not nearly far enough to where Douglas Engelbart was in 1968.)

https://en.wikipedia.org/wiki/The_Mother_of_All_Demos

>The live demonstration featured the introduction of a complete computer hardware and software system called the oN-Line System or, more commonly, NLS. The 90-minute presentation essentially demonstrated almost all the fundamental elements of modern personal computing: windows, hypertext, graphics, efficient navigation and command input, video conferencing, the computer mouse, word processing, dynamic file linking, revision control, and a collaborative real-time editor (collaborative work). Engelbart's presentation was the first to publicly demonstrate all of these elements in a single system. The demonstration was highly influential and spawned similar projects at Xerox PARC in the early 1970s. The underlying technologies influenced both the Apple Macintosh and Microsoft Windows graphical user interface operating systems in the 1980s and 1990s.

http://worrydream.com/Engelbart/

>Engelbart's vision, from the beginning, was collaborative. His vision was people working together in a shared intellectual space. His entire system was designed around that intent.

>From that perspective, separate pointers weren't a feature so much as a symptom. It was the only design that could have made any sense. It just fell out. The collaborators both have to point at information on the screen, in the same way that they would both point at information on a chalkboard. Obviously they need their own pointers.

>Likewise, for every aspect of Engelbart's system. The entire system was designed around a clear intent.

>Our screen sharing, on the other hand, is a bolted-on hack that doesn't alter the single-user design of our present computers. Our computers are fundamentally designed with a single-user assumption through-and-through, and simply mirroring a display remotely doesn't magically transform them into collaborative environments.

>If you attempt to make sense of Engelbart's design by drawing correspondences to our present-day systems, you will miss the point, because our present-day systems do not embody Engelbart's intent. Engelbart hated our present-day systems.

And it's in the direction of multi-user collaboration that X-Windows falls woefully short. Just to take the first step, it would have to support separate multi-user cursors and multiple keyboards and other input devices, which is antithetical to its singleminded "input focus" pointer event driven model. Most X toolkits and applications will break or behave erratically when faced with multiple streams of input events from different users.

https://tronche.com/gui/x/xlib/input/XGrabPointer.html

For the multi-player X11/TCL/Tk version of SimCity, I had to fix bugs in TCL/Tk to support multiple users, add another layer of abstraction to support multi-user tracking, and emulate the multi-user features like separate cursors in "software".

Although the feature wasn't widely used at the time, TCL/Tk supported opening connections to multiple X11 servers at once. But since it was using global variables for tracking pop-up menus and widget tracking state, it never expected two menus to be popped up at once or two people dragging a slider or scrolling a window at once, so it would glitch and crash whenever that happened. All the tracking code (and some of the colormap related code) assumed there was only one X11 server connected.

So I had to rewrite all the menu and dialog tracking code to explicitly and carefully handle the case of multiple users interacting at once, and refactor the window creation and event handling code so everything's name was parameterized by the user's screen id (that's how you fake data structures in TCL and make pointers back and forth between windows, by using clever naming schemes for global variables and strings), and implement separate multi-user cursors in "software" by drawing them over the map.

Multi-Player X11 SimCityNet:

https://www.youtube.com/watch?v=_fVl4dGwUrA

X11 SimCity Pie Menus:

https://www.youtube.com/watch?v=Jvi98wVUmQA

Multi-user menu tracking (added "@$screen" parameterizations):

https://github.com/SimHacker/micropolis/blob/master/micropol...

Opening multiple X11 displays (multiple toplevel "head" windows per screen, each with a unique id, using $win parameterization):

https://github.com/SimHacker/micropolis/blob/master/micropol...