<a href="https:&#x2F;&#x2F;lobste.rs&#x2F;" rel="nofollow">https:&#x2F;&#x2F;lobste.rs&#x2F;</a> is very similar to HN, but it&#x27;s invite-only. (If anyone reading this has an account there, I&#x27;d appreciate an invite! :P)<p><a href="http:&#x2F;&#x2F;firespotting.com&#x2F;" rel="nofollow">http:&#x2F;&#x2F;firespotting.com&#x2F;</a> uses the same Arc-based framework HN runs on, but is virtually unknown.