The two most indispensable things that should work with the Q&A software the new physics site will use are that LaTex / Mathjax can be implemented and that the Theoretical Physics Stack Exchange data dump can be completely imported. Both things seem to be (with more or less effort) technically feasible for a number of SE clones, which is good. In addition, for those who are accustomed to what a Stack Exchange site looks like, it would probably be good if the design of the new site would be not too different.
This discussion is intended to evaluate and discuss in some detail, what features and functionalities, known from SE or elsewhere are important for us to have.
So here are again some polls:
At some Stack Exchanges clones we have already looked in some more detail:
Q2A looks quite similar to Stack Exchange, there is a good manual how to install the software on a laptop, and people on Stack Overflow find it easy to install. However, hosting is not free.
It allows for several administrators / moderators, there is a quite flexible rep dependent privilege system. At least at present, closing and reopening questions works only unilateral.
There is a support Q&A site, where it is quite easy to obtain answers.
QSQA looks quite similar to Stack Exchange too, however people on Stack Overflow find it difficult to install.
To obtain answers at the support Q&A site seems to take its time at times.
Askbot seems to have a good privilege system and good moderation tools. However, hosting is not free and the prize to pay depends on the expected number of users that will join the community. A support Q&A site is available.
Shapado does not look like Stack Exchange, it has no voting / reputation system, hosting is not free. Close and reopen of questions seems not to be possible. Even though there is a support Q&A site, it seems not to be very active as I obtained no answer when asking about importing SE data dumps and installing LaTex.
They have a very nice and friendly support site, LaTex is not installed at present, but importing SE data dumps should work.