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Ask HN: What's the oldest piece of software still in use?

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Ask HN: What's the oldest piece of software still in use?

#1
I use a 13 year old copy of Quicken for bank account management. I'm interested in examples of software that are older than that and still being used.

I'm not interested in software that's been patched over the years, but code that's been unchanged for years and is still in active use. Are you using any DOS programs, for example?

Re: Ask HN: What's the oldest piece of software still in use?

#6
I made a website that's by now obsolete for anyone but me, but I still use it. It went live in late 2002 and hasn't been patched since early/mid 2003. This year 1and1 (my host) disabled MYSQL 4, so I moved database to MYSQL 5, but did not change the code. I have grandiose hopes to update it to look current.

Although now that I look at it, they say my version of php will be phased out August 1'st :( And they are raising the price on August 1'st ...

Re: Ask HN: What's the oldest piece of software still in use?

#8

For a lot of people in non-technical professions it might actually be Windows XP. That is, of course, if we're putting aside some of the basic UNIX tools that probably haven't changed since the 1970s—which I think is fair.

I believe that honour goes to dc (if you're in linux, you can still use dc).

Re: Ask HN: What's the oldest piece of software still in use?

#10
We use DOS programs within virtual machines to process data that comes in on 1/2" tape from government sources and return it to them on DVD's. The oldest of these would be mid 80's I guess.

Edit: Changed "in-virtuo" to "within virtual machines" for clarity.

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