I want to ask about various mathematical fora and discussion boards available online. I think it might be useful to have such a list here at Math.SE.

If I may suggest, it could be useful to keep one long list with basic information as a community wiki, and if you want add some additional information on some of them, a separate answer might be the best way. (E.g. information like: "this forum is particularly suitable for questions about contest math" or "this forum is frequented by specialists in computer algebra, most discussions are about CAS software such as GAP", etc.)

In particular, if you deem some of other fora more suitable for some kind of questions than math.SE, this would probably be an interesting information for users of this site.

A related question: Which discussion board is good for homework questions?

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    $\begingroup$ My instinct would suggest that this kind of a list would be better placed in Meta, but let's see how others feel about that. Before I found this place, I was active in the math section of fora.xkcd.com. It isn't nearly as useful or active as this place, and also it is a tad too "chatty". But (being moderated) better than, say, the troll-infested usenet group sci.math. $\endgroup$ Aug 26, 2012 at 10:20
  • $\begingroup$ @Jyrki I've added that forum to the list. Since you are familiar with the forum, you could perhaps check, whether the information I've given there is correct. $\endgroup$ Oct 27, 2012 at 7:34
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    $\begingroup$ Somewhat related question on MathOverflow meta: Any other site besides mathoverflow and mathematics stackexchange? $\endgroup$ Dec 4, 2016 at 7:52

1 Answer 1


English language

German language

Czech language

Italian language

Russian language

  • dxdy, phpBB, supports LaTeX.
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    $\begingroup$ I've included links to google searches in some places; I think it might be interesting to see, whether these fora are often mentioned in math.SE posts. $\endgroup$ Jan 2, 2012 at 12:28
  • $\begingroup$ I removed "Integrals and Series". It was great for a while, but dead since 2017. $\endgroup$
    – GEdgar
    Sep 23, 2020 at 21:30
  • $\begingroup$ fora.xkcd.com has been offline since 2019 data breach. $\endgroup$ Dec 27, 2020 at 6:55
  • $\begingroup$ @AlphaDelta I have edited the post. The answer is CW, feel free to add more details if you wish to. $\endgroup$ Dec 27, 2020 at 8:49
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    $\begingroup$ Control+F does not find it; how about codidact? $\endgroup$ Oct 20, 2022 at 11:37

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