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There has been some recent concerns about MathOverflow's relationship with StackExchange: see

Suppose MO were to decide to sever the relationship (not that I am advocating it at the present), how far away are we from having a replacement?

Finding hosting and DNS service will cost some money, but is relatively benign as problems go. But what about the backend software? Our agreement (a copy is posted here) states in Section 7 that

Subject to Section 8, should MathOverflow wish to migrate its data outside of the Stack Exchange network, Stack Exchange shall, within thirty (30) days of receipt of a written request from MathOverflow, provide MathOverflow with a complete and current database that contains all the data necessary to recreate MathOverflow on MathOverflow's own servers and software. Following such transfer, StackExchange will cease all use of the MathOverflow database.

Do we know what said database would look like? Is there already software compatible with serving based on that database, or is that something that will require development?

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    $\begingroup$ I would expect the database to be in a form similar to the existing periodic data dumps at archive.org/details/stackexchange (not that I have any idea what those looks like inside). Concerning software, see meta.stackexchange.com/q/2267 . Importing the Stack Exchange data dumps can’t be that difficult, as witnessed by writing.codidact.com (which, however, apparently runs on some sort of temporary software). $\endgroup$ – Emil Jeřábek Jan 16 at 16:49
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    $\begingroup$ 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 $\endgroup$ – David Roberts Jan 18 at 8:11
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    $\begingroup$ Maybe it's fixable with better CSS, but I find PhysicsOverflow's design to be incredibly ugly. $\endgroup$ – Mike Miller Jan 22 at 15:46

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