Demos of tools and projects inspired by Doug Engelbart’s legacy will be offered during lunch, afternoon break, and evening reception (list subject to change). Watch Brief Intro to Demo Exhibits. See also the printable Event Program for streamlined Demos listing. For a full interactive list and to join the dialog visit

NLS/Augment Revisited

Partial implementations of Doug’s system on current platforms:

  • HyPerform – N. Dean Meyer, ARC alumnus
    A re-creation of the original high-performance outlining thinking tool from the lab that invented the mouse and windowing.
  • Orville – Bob Czech, former contract programmer for Doug.
    Basic Augment/NLS navigation and viewspecs in web browser.


  • Ted Nelson: Xanadu Basics
    Visible Bridges Between Pages

    Designer: Theodor Holm Nelson
    Programmer: Edward Betts
    (Proposed by Nelson in 1972.)
    Windows can be moved, scrolled and resized. Links, which may be turned on and off, show as visible bridges.
  • Norm Meyrowitz: Intermedia
    Intermedia was a networked-hypermedia system developed at Brown University in the late 1980s. It predated the Web, and influenced both the inventor of the Web and the creator of the first graphical browser. Norm later oversaw products at Macromedia including the website editor Dreamweaver, Shockwave, Flash and other key Internet technologies.
  • Andries (Andy) van Dam
    Longtime professor at Brown University; contributor to the early Hypertext Editing System; central to the development of computer graphics.
  • Tim Berners-Lee
    Inventor of the World Wide Web.

    Watch his Tribute Video


  • Collaborama – Adam Cheyer
    Unified software development and project management environment.

Connected Thinking Spaces

  • Liquid Space[*] – Christopher Gutteridge with Frode Hegland
    A visual research & thinking space. Built as an open web application integrating graph APIs and applications like TrailMarks, Hypothesis, HyperKnowledge and Author.
  • HyperKnowledge[*] – Marc-Antoine Parent, Gyuri Lajos, Robert Cunningham
    Hyperknowledge enables users and groups to build federated ecosystems of knowledge work tools.
  • TrailMarks[*] – Gyuri Lajos
    TrailMarks is a MEMEX for the web as annotated by : Mark the trails you blaze as you annotate the web with
  • KnowFlow[*] – Timour Shoukine and Irina Antonova
    A web based multiuser visual knowledge management environment for collaborative groups.
  • Hypothesis[*] – Dan Whaley
    Open source web-overlay annotation tools.
  • Exaptive – Dave King
    Tools to bring together people, data, and analyses to support collaborative communities and boundary crossing interactions.

Tools for Living

  • Dynamicland – Luke Iannini
    Computing and collaboration with ordinary physical objects brought to life by technology in the ceiling: the building is the computer.
  • AgeAtHome: Experiments in Cognitive Eldercare – DC Martin, IBM Almaden Research Center
    Experiments in eldercare assistance using AI at the edge of the network (i.e., in the home).

*A Note on Some of the Demos

In a very few weeks some of the people and groups listed above took the opportunity to integrate their independent tools to work together at The Demo@50.

The fact that we can do this is a testament to the power of the web, within which all of these systems exist and operate– something that in Doug’s time, he didn’t have at all. (Perhaps the “operating substrate” of Doug’s time was the operating system itself, the “invisible substrate” that his demo existed within).

In 2018, the operating substrate of the demo is the web (another one is the mobile platform– but that by nature is platform specific, and apps need to be rewritten for each).

What we’ve done is take a specific workflow– that of a reader consuming information, responding to that information (both for their own purposes and for collaborative reasons), and then exploring the resulting data from a top-level view. We’ve shown that this kind of demo is easy to create, and easy to benefit from. It’s based fundamentally on the power of the browser, the standards work that the W3C has done, and the universal transport of the Web and the Internet over which it flows.

jrnl ( was used as the working blog for many of these demos.