LWN.net is described as 'aims to be the premier news and information source for the free software community. We provide comprehensive coverage of development, legal, commercial, and security issues. The LWN' and is an website in the News & Books category. There are more than 10 alternatives to LWN.net, not only websites but also apps for a variety of platforms, including Android, iPhone, Windows and Linux. The best alternative is SaidIt.net, which is both free and Open Source. Other great sites and apps similar to LWN.net are Lobsters (Free, Open Source), Ruqqus.com (Free, Open Source), Aether (Freemium, Open Source) and Raddle (Free, Open Source).
Uncensored free speech alternative to the extreme Reddit and Voat forums, democratically civilized by Graham's Debate Pyramid, no illegal transactions nor porn. Truth-seeking anti-corruption news are among the popular themes. Android app, iOS soon.
Lobsters is a technology-focused link-aggregation site. The site is driven by Ruby on Rails with the source code being freely available for those seeking to create a site similar to Reddit or Hackernews.
Unsatisfied with the few link sharing communities that were available and their proprietary, untransparent and non-secure nature, ziq made the original raddle.me (then known as raddit.me) with Wordpress, but it had a lot of limitations.
News for nerds, stuff that matters. Slashdot (aka /.) is a technology-related news and discussion site with a focus on Linux, free and open source software and information freedom and privacy issues. The software it runs on, called Slashcode, is open source.