Euclid's Prime Alternatives

Reddit (stylized in its logo as reddit) is an American social news aggregation, web content rating, and discussion website. Registered members submit content to the site such as links, text posts, and images, which are then voted up or down by other members.

Hacker News is a social news website that caters to programmers and entrepreneurs, delivering content related to computer science and entrepreneurship.

Open source, self-governing communities with auditable moderation and mod elections.

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.

A non-profit community site driven by its users' interests.

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.

folkd.com - Social Bookmarking - Save your bookmarks and links online and search what your friends like.

The democratic reddit alternative.

den.social is a decentralized reddit-like community, where people can post inside "Lairs" akin to subreddits, and govern each lairs via votes.

Twincl is characterized by forum (including link sharing), Q&A, review and blog sites, using CommonMark as its writing format. Twincl features innovative Markdown editing, topic trees, voting/remarks, selected posts, senior authors, logarithmic scales, and more.

Lambda the Ultimate is a community blogging website about programming languages, their theory and their research created in 2000 by Ehud Lamm.

SuccessValley is an online Network Community for students and aspiring entrepreneurs.