The best open source alternative to Tumblr is Mastodon. If that doesn't suit you, our users have ranked more than 100 alternatives to Tumblr and loads of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Tumblr are WordPress, Pixelfed, Minds and Pleroma.
Decentralized and federated social platform with no ads, focusing on personal interaction, and offering 500 character posts, custom emojis, content warnings, and robust moderation tools.
Create a website or blog with open-source software focused on accessibility, ease of use, performance, and security. Minimal setup, powerful growth features, and a large community supporting democratization of publishing.
Federated image-sharing platform with privacy, safety, no tracking or ads, algorithm-free chronological timelines, open-source code, comprehensive moderation, supports self-hosting, ActivityPub protocol, hashtag discovery, responsive mobile access, and ethical data control.
An open-source platform for decentralized social networking. Users can monetize posts through ads or monthly support, engaging in various features such as Blogs, Videos, and secure private chats. Minds supports free speech and facilitates sharing across networks and exploring global trends.
Pleroma is a free, federated social networking server built on open protocols. It is compatible with GNU Social, Mastodon, and many other ActivityPub and OStatus implementations.
WriteFreely is an open-source, minimalist, federated, self-hosted blogging platform. It was built for and by Write.as and can be used to power a similar community or just a single blog.
Wafrn is a social network inspired by tumblr, that also can connect with other wafrn instances, or with mastodon, pleroma, firefish and other platforms that use activitypub.
Where programmers share ideas and help each other grow. It is an online community for sharing and discovering great ideas, having debates, and making friends. Anyone can share articles, questions, discussions, etc. as long as they have the rights to the words they are sharing.
Plume is not a single website, but an entire interconnected, yet independent network of what we call instances. You write content from your own instance, but anyone else on any other Plume instance can enjoy your stories too.
This is a fork of Pleroma, which is a microblogging server software that can federate (= exchange messages with) other servers that support ActivityPub. What that means is that you can host a server for yourself or your friends and stay in control of your online identity, but...
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It's a Twitter alternative.