[geeks] Oldest OS Still Developed

[Lionel Peterson]

>From: "Geoffrey S. Mendelson" <gsm at mendelson.com>
>Date: 2006/10/18 Wed AM 11:49:47 CDT
>To: The Geeks List <geeks at sunhelp.org>
>Subject: Re: [geeks] Oldest OS Still Developed

>On Wed, Oct 18, 2006 at 11:00:18AM -0400, Sridhar Ayengar wrote:
>> What is the oldest OS still being developed?  VSE?  GCOS8?
>
>MVS?  Direct descendent of OS/360 which predates AFIK DOS (now VS/E).
>
>Is anyone still using ACP (airline control program)?

Whatever runs the US Air Traffic Control system would get my vote...

Last I heard, REPEATED attempts to replace those platforms have failed, leaving us with a very mature product.

Lionel