FreeBSD forums, using XenForo which doesn't seem to be open source: https://forums.freebsd.org/ https://forums.freebsd.org/ Arch Linux forums, using FluxBB: ht

FreeBSD forums, using XenForo which doesn't seem to be open source: https://forums.freebsd.org/ https://forums.freebsd.org/ Arch Linux forums, using FluxBB: https://bbs.archlinux.org/ https://bbs.archlinux.org/ Free Pascal forums, using Simple Machines Forum: https://forum.lazarus.freepascal.org/ https://forum.lazarus.freepascal.org/ Python forums, using Discourse: https://discuss.python.org/ https://discuss.python.org/ Nim forums, using their own nimforum software written in Nim: https://forum.nim-lang.org/ https://forum.nim-lang.org/