Tildes is described as 'A non-profit community site driven by its users' interests' and is a Social Network in the social & communications category. There are more than 50 alternatives to Tildes, not only websites but also apps for a variety of platforms, including Android, iPhone, iPad and Android Tablet apps. The best Tildes alternative is Lemmy, which is both free and Open Source. Other great sites and apps similar to Tildes are Reddit, Hacker News, Stack Exchange and PieFed.
4chan is a simple image-based bulletin board where anyone can post comments and share images. There are boards dedicated to a variety of topics, from Japanese animation and culture to videogames, music, and photography.
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Slide for Reddit is a rock-solid material-designed unofficial browser for Reddit with an easy to use UI and tons of customization. Slide is ad-free, open source, and is packed with many unique features.
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Dead Men Society is a privacy focused role-playing social network platform for forum lovers, hobbyists, people who want to share their art, journalists, and those who enjoy escapist fantasies.
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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.
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Chatpic.org is a media based platform where anyone can upload images or videos and share comments. There are channels dedicated to a variety of topics like: photography, gaming or politics. You do not need to register before participating in the community.
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.
HiddenLayer.app is a discussion and information platform consisting of layers. Layers personify concepts, ideas, and data as independently run communities. Powered by a UI and infrastructure capable of organizing and analyzing millions of posts.
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Postmill is a free, web-based, social link aggregator with voting and threaded comments. It is built on the Symfony framework. Used to host raddle.me.
Lainchan is a great imageboard package, actively building on it and adding a lot of features and other improvements. This imageboard's topic focused to anime, manga, politic, and technology.
The ultimate ad-free Reddit experience. Fully customizable, open-source, and lightning-fast. Switch to Infinity for a cleaner, smoother way to browse Reddit.
Nonio is a Reddit-like platform that gives directly back to content creators. Nonio takes a small portion of subscription costs to run the service and anything over that is split evenly between everything users upvote that month.
