They have an informative website and an online emulator at <a href="https:&#x2F;&#x2F;interlisp.org&#x2F;software&#x2F;access-online&#x2F;" rel="nofollow">https:&#x2F;&#x2F;interlisp.org&#x2F;software&#x2F;access-online&#x2F;</a>

Made me look: Xerox LFG Grammar Writer&#x27;s Workbench: <a href="https:&#x2F;&#x2F;web.archive.org&#x2F;web&#x2F;20170907021542&#x2F;https:&#x2F;&#x2F;www2.parc.com&#x2F;isl&#x2F;groups&#x2F;nltt&#x2F;medley&#x2F;" rel="nofollow">https:&#x2F;&#x2F;web.archive.org&#x2F;web&#x2F;20170907021542&#x2F;https:&#x2F;&#x2F;www2.parc...</a>Interlisp screenshot: <a href="https:&#x2F;&#x2F;web.archive.org&#x2F;web&#x2F;20160616231118&#x2F;http:&#x2F;&#x2F;www2.parc.com&#x2F;isl&#x2F;groups&#x2F;nltt&#x2F;medley&#x2F;screenshot.gif" rel="nofollow">https:&#x2F;&#x2F;web.archive.org&#x2F;web&#x2F;20160616231118&#x2F;http:&#x2F;&#x2F;www2.parc....</a>Evidently the emulator was later ported to Linux as well.

The Lisp Machine emulator that was tied to DEC Alpha was Symbolics OpenGenera.

~wavy lines~~ I&#x27;ve never used this in anger, but I owned a second-hand Xerox Daybreak for a while to play around with. Later, there was a some freely available project (I&#x27;ve now forgotten) that used Interlisp running on an emulator running on a DEC Alpha, and so I added some minor bits to NetBSD&#x27;s Ultrix compatibility.

&gt; What does a Lisp Machine of the future look like?Depends on what one means by that.Dedicated hardware? I doubt that we’ll ever see that again, although of course I could be wrong.A full OS? That’s more likely, but only just. If it had some way to run Windows, macOS or Linux programs (maybe just emulation?) then it might have a chance.As a program? Arguably Emacs is a Lisp Machine for 2025.Provocative question: would a modern Lisp Machine necessarily use Lisp? I think that it probably has to be a language like Lisp, Smalltalk, Forth or Tcl. It’s hard to put into words what these very different languages share that languages such as C, Java and Python lack, but I think that maybe it reduces down to elegant dynamism?

LMI here <a href="https:&#x2F;&#x2F;github.com&#x2F;dseagrav&#x2F;ld">https:&#x2F;&#x2F;github.com&#x2F;dseagrav&#x2F;ld</a>

What does a Lisp Machine of the future look like?There is Mezzano [1] as well as the Interlisp project described in the linked paper and another project resurrecting the LMI software.[1] <a href="https:&#x2F;&#x2F;github.com&#x2F;froggey&#x2F;Mezzano">https:&#x2F;&#x2F;github.com&#x2F;froggey&#x2F;Mezzano</a>

Smalltalk was the lisp machine of the future. Of course, now even Smalltalk is a thing of the past.

Retro lisp machines are cool. Kudos to the team. Love it.That said… we need the “lisp machine” of the future more than we need a recreation.

&gt; So large. :)Consider this: at any moment in history, the prevailing state the art in computing and information systems are characterized has huge, very large, massive, etc. Some years later, it&#x27;s a portable device with a battery, and we forgive and snicker at those naïve souls that had no idea at the time.It&#x27;s still true today. Whatever thing you have in mind: vast software systems running clouds, megawatt powered NVidia GPU clusters, mighty LLMs... given 10-20 years, the equivalent will be an ad subsidized toy you&#x27;ll impulse purchase on Black Friday.You&#x27;re instinct will be to reject this as absurd. Keep in mind, that is the same impulse experienced by those that came before us.

A better URL:<a href="https:&#x2F;&#x2F;www.softwarepreservation.org&#x2F;projects&#x2F;LISP&#x2F;interlisp-d&#x2F;Papers_On_Interlisp-D.pdf" rel="nofollow">https:&#x2F;&#x2F;www.softwarepreservation.org&#x2F;projects&#x2F;LISP&#x2F;interlisp...</a>

Or Objective-C,<a href="https:&#x2F;&#x2F;github.com&#x2F;Quotation&#x2F;LongestCocoa">https:&#x2F;&#x2F;github.com&#x2F;Quotation&#x2F;LongestCocoa</a>Or Smalltalk or C++,<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Design_Patterns" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Design_Patterns</a>Or even C,<a href="https:&#x2F;&#x2F;www.amazon.com&#x2F;Modern-Structured-Analysis-Edward-Yourdon&#x2F;dp&#x2F;0135986249" rel="nofollow">https:&#x2F;&#x2F;www.amazon.com&#x2F;Modern-Structured-Analysis-Edward-You...</a>Point being, people like to blame Java, while forgetting history of enterprise architecture.

Same thing could probably be some 200k or more LoC in enterprise Java.

I love this quote (from Interlisp-D: Overview and Status):&quot;Interlisp is a very large software system and large software systems are not easy to construct. Interlisp-D has on the order of 17,000 lines of Lisp code, 6,000 lines of Bcpl, and 4,000 lines of microcode.&quot;So large. :)<a href="http:&#x2F;&#x2F;www.softwarepreservation.net&#x2F;projects&#x2F;LISP&#x2F;interlisp-d&#x2F;Papers_On_Interlisp-D.pdf" rel="nofollow">http:&#x2F;&#x2F;www.softwarepreservation.net&#x2F;projects&#x2F;LISP&#x2F;interlisp-...</a>

The Medley Interlisp Project: Reviving a Historical Software System [pdf]