Depending on how you define "use", I still have a Tandy 1000 running I believe DOS 3.something at my parent's house as a track timer for my dad's slot car track.  Originally I was using an original IBM PC, but a power surge fried that machine. 
 
It's not really an active machine per se, only running once a month or so when we're testing cars, or the occasional track party/race. 
 
eric

 
On 11/30/06, Jeremy C. Reed <reed@reedmedia.net> wrote:
I was was wondering what is the oldest software in use.

What is the oldest software that you use?

I sometimes play xvier (no version) from July 1992.

And I sometimes use mm (metamail) 2.7 from Feb. 1994. But I have recent
patches for metamail so that doesn't count for me.

I also sometimes use GNU ed 0.2 from Nov. 1994. It has a patch for the
info file from maybe five years ago too. But now ed has been revived and a
new release was made within past couple weeks.

Another old program I use is findutils "find" 4.1 from Nov. 1994. But I
also have various recent patches for it.

And I use mpage 2.5 from November 1997. But I know mpage has a recent
versions so I may update soon.

I also sometimes use xearth 1.1 from Nov. 1999 with a patch from 2002 but
I am now using xplanet instead. And I also use psutils p17 from Jan. 2000.
And I sometimes use sgmltools-lite 3.0.3 from Jun. 2001.

I also looked at the standard tools I use (under NetBSD) but everything
except uname appears to have been updated within last few years. So I use
"uname" from Nov. 1998. But that is not a good example as it is not
released by itself. (I didn't look specifically at coreutils source to
compare with that.)

Some of my customers use BSD/OS versions from mid 1990's with newer
updates of some services, but still lot of software from mid to early
1990's still in use.

Some of my customers run real qmail 1.03 which had last release in June
1998. (New patches are available and netqmail is probably becoming more
used now.)

What is the oldest software you use?

What is the oldest software used at work?

Is there newer versions available? If so, why use old?

Jeremy C. Reed
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