This used to be called Reddit. Not so much anymore, since they started optimizing for advertisers instead of users.
I don't think there are going to be very many places like HackerNews. "Hackers" as a subculture are bolstered by the fact that Internet based modes of communication and work (not just forums but also things like Github) are seen as interesting and productive. Plus the people capable designing such a forum are likely to be software people; it's a bit more difficult for a skilled mechanical engineer to quickly set up a forum. So it's no surprise that many of the forums are software/"hacker" oriented (e.g. Blind, Lobste.rs, HN). Any forum built by software engineers for other people seems doomed to go the way of Reddit rather than the way of HN.
However, I'll give a shoutout for a great community forum that I've participated in, and that's ChiefDelphi. But that's super niche (it's focused around the high school FIRST robotics competition).
I don't think there are going to be very many places like HackerNews. "Hackers" as a subculture are bolstered by the fact that Internet based modes of communication and work (not just forums but also things like Github) are seen as interesting and productive. Plus the people capable designing such a forum are likely to be software people; it's a bit more difficult for a skilled mechanical engineer to quickly set up a forum. So it's no surprise that many of the forums are software/"hacker" oriented (e.g. Blind, Lobste.rs, HN). Any forum built by software engineers for other people seems doomed to go the way of Reddit rather than the way of HN.
However, I'll give a shoutout for a great community forum that I've participated in, and that's ChiefDelphi. But that's super niche (it's focused around the high school FIRST robotics competition).