There has been some recent concerns about MathOverflow's relationship with StackExchange: see What is MathOverflow's "agreement" with Stack Exchange? How much is MathOverflow exposed to recent events on StackExchange? Suppose MO were to decide to sever the relationship (not that I am advocati...

Since the source code for this site isn't available for purchase or external use, I'm looking for software that can run a Q&A environment similar to Stack Exchange. Are there any such pieces of software available?

Stack Overflow for Teams, a hosted solution, is available for use. In the past there was an enterprise version of Stack Overflow, but this is now deprecated. But if that does not meet your needs, there are several third-party tools that try to clone at least some of the functionality here. Most a...

I am currently following Codidact with some interest. Codidact is a work in progress and fairly new, but describes itself as: A community-controlled, open-source Q&A platform. Further Information: Codidact Blog Codidact Wiki on GitHub Codidact.org website Codidact on GitHub Codidact's Network...

Converted from a comment: Codidact was born of a previous mass exodus from SE and has some experience with migrating data from SE to their software platform, QPixel.

Converted from a comment: I would expect the database to be in a form similar to the existing periodic data dumps at https://archive.org/details/stackexchange (not that I have any idea what those looks like inside). Concerning software, see Are there any clones/alternatives for running a Stack Ex...

Converted from a comment: PhysicsOverflow has a setup that's reasonably close to MO. It runs on the Question2Answer software. It was in part set up a kind of exodus from physics.stackexchange