The current version of Arc can be found at arclanguage.org, forum included, but HN itself runs a lot of proprietary code so the base version of the language and forum won't have feature parity with HN.
There is also Anarki[0], which is the public fork of Arc and the forum, which is very much not in feature parity with HN. Anyone who wants to contribute is welcome to.
There is also Anarki[0], which is the public fork of Arc and the forum, which is very much not in feature parity with HN. Anyone who wants to contribute is welcome to.
[0]https://github.com/arclanguage/anarki