I know there used to be a few SE1.0 sites still around, and many got migrated to 2.0

  1. Mi.Yodeya
  2. MathOverflow

Some moved out of SE altogether (such as parenting).

Are any still in 1.0 mode?

  • 1
    Area51 is a 1.0 fork, I think. – Martijn Pieters Jun 30 '13 at 18:29
  • There is a deleted question linking some sites. But many of them no longer exist or are no longer a 1.0 site. – Bart Jun 30 '13 at 18:38
  • 4
    parenting is very much part of Stack Exchange and still in beta, why you think it's "moved out of SE"? – Shadow Wizard is Vaccinating Jun 30 '13 at 19:32
  • @MartijnPieters what did it do in 1.0? – Shmuel Jul 2 '13 at 21:31
  • Whatever it did, it is still doing it. Area51 is still active. – Martijn Pieters Jul 2 '13 at 21:33
  • @MartijnPieters It just had a credit-card field in the end? – Shmuel Jul 2 '13 at 21:37
  • @MartijnPieters Wasn't SE1.0 just selling and hosting private QA sites? For what do you need an area51? – Shmuel Jul 2 '13 at 21:39
  • @MartijnPieters that's how it works now. Did it do this in SE1.0? – Shmuel Jul 2 '13 at 21:41
  • @ShmuelBrin: That is what I am saying; the software used to run that site is a fork of the 1.0 codebase. – Martijn Pieters Jul 2 '13 at 21:43

I asked this question in a comment a while back, but I forget exactly where.

As far as I know, PaleoHacks is the only existing SE 1.0 site. MathOverflow was recently migrated to SE 2.0, though:

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