Lobsters is described as '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' and is a Social News in the news & books category. There are more than 25 alternatives to Lobsters for a variety of platforms, including Web-based, Self-Hosted, Android, iPhone and Android Tablet apps. The best Lobsters alternative is Lemmy, which is both free and Open Source. Other great apps like Lobsters are Reddit, Hacker News, Digg and PieFed.
Similar topics, similar user interface.