Awesome AJAX web-based telnet application

A while back, I wrote the article, “A Web-enabled, Monad front end: Monad hosting.”  It was in reference to WebCmd, a neat little Javascript application that emulates an interactive terminal.

I also talked about the fact that it wasn’t really an interactive terminal. 

This falls quite short of the infrastructure required to support an interactive program such as VI. Let alone Emacs 🙂  There's no support for cursor positioning, keyboard polling, and much more. For the Unix world, take a gander at the feature set of the VT100 Terminal Emulation Requirements. For the Windows world, look at the Win32 Console API. To make a fully interactive web-enabled front-end, you would need to implement the equivalent of cmd.exe in Javascript. The performance would be atrocious. So in the end, it's attainable -- but at a very large cost. Once you're done writing that much Javascript, you're likely to start rocking back and forth, whilst arguing with yourself.

Fast forward to today, where the Mike Bergsma leaves the following sleeper comment:

Did it. VT200 emulation. Pure AJAX. SSL It was difficult to say the least. It launches with a CGI script, or it is downloadable.

It’s a comment of understated magnificence.  One in the same vein as Fermat’s famous, "I have a truly marvelous proof of this proposition which this margin is too narrow to contain."

Mike has implemented a web-based telnet application, including support for VT200 terminal emulation.  Mike provides a guest account on his server to test with.  I was able to log in, navigate around the system, get colorful directory listings, use hotkey shortcuts, and even execute heavyweight applications such as VI and Emacs.

Truly amazing – check it out:!

[Edit: This seems to have moved here: ]


[Edit: Monad has now been renamed to Windows PowerShell. This script or discussion may require slight adjustments before it applies directly to newer builds.]

8 Responses to “Awesome AJAX web-based telnet application”

  1. dotcomUNDERGROUND writes:

    tnx for pointing to a great app.

    i just love AJAX based stuffs 🙂

  2. larytet writes:

    try the page linked

  3. jwub writes:

    This thing seems to have vanished. Anyone know if this was Open Source and if so, where to get it from? I really could use a web based telnet app.

  4. Lee writes:

    Looks like he’s experiencing technical difficulties. It’s back up now, but showing the defalt Apache homepage. Let’s hope he had good backups 🙂

  5. Rizwan writes:

    Multan Mailsi and etc

  6. Chris Reeves writes:

    Whats going on?

    I try the link! or just but just get a blank page with "Hello World" at the top.

    Is there supposed to be something else on this page?

    I would really be interested in this application.



  7. anonymous writes:

    microsoft now has a product also called windows powershell

  8. slovak writes:

    Got ” (111) Connection refused” from

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