Today I learned about Sublinks (here), an open-source project that aims to be a drop-in replacement for the backend of Lemmy, a federated link aggregator and microblogging platform. Sublinks is designed to be initially API-compatible with Lemmy, allowing existing Lemmy clients, such as Lemmy-UI, to integrate seamlessly.

The project is written in Java, which may introduce some overhead but is chosen for its maintainability and familiarity among a wider pool of developers. The Sublinks team prioritizes a more inclusive and less toxic development environment, and the project has already attracted more developers than Lemmy.

While Sublinks is starting with 1:1 compatibility, future plans include implementing additional features that the Lemmy developers have not pursued. This could lead to a divergence in functionality between the two platforms as Sublinks evolves beyond its initial compatibility phase.


GitHub stars GitHub tag (latest SemVer) gradle workflow GitHub issues License


A decentralized, censorship-resistant, and privacy-preserving social network.


Sublinks, crafted using Java Spring Boot, stands as a state-of-the-art link aggregation and microblogging platform, reminiscent yet advanced compared to Lemmy & Kbin. It features a Lemmy compatible API, allowing for seamless integration and migration for existing Lemmy users. Unique to Sublinks are its enhanced moderation tools, tailored to provide a safe and manageable online community space. Embracing the fediverse, it supports the ActivityPub protocol, enabling interoperability with a wide range of social platforms. Sublinks is not just a platform; it’s a community-centric ecosystem, prioritizing user experience, content authenticity, and networked social interaction.


  • Open source, MIT License.
  • Self hostable, easy to deploy.
  • Clean, mobile-friendly interface.
    • Only a minimum of a username and password is required to sign up!
    • User avatar support.
    • Live-updating Comment threads.
    • Full vote scores (+/-) like old Reddit.
    • Themes, including light, dark, and solarized.
    • Emojis with autocomplete support. Start typing :
    • User tagging using @, Community tagging using !.
    • Integrated image uploading in both posts and comments.
    • A post can consist of a title and any combination of self text, a URL, or nothing else.
    • Notifications, on comment replies and when you’re tagged.
      • Notifications can be sent via email.
      • Private messaging support.
    • i18n / internationalization support.
    • RSS / Atom feeds for All, Subscribed, Inbox, User, and Community.
  • Cross-posting support.
    • A similar post search when creating new posts. Great for question / answer communities.
  • Moderation abilities.
    • Public Moderation Logs.
    • Can sticky posts to the top of communities.
    • Both site admins, and community moderators, who can appoint other moderators.
    • Can lock, remove, and restore posts and comments.
    • Can ban and unban users from communities and the site.
    • Can transfer site and communities to others.
  • Can fully erase your data, replacing all posts and comments.
  • NSFW post / community support.
  • High performance.



Support / Donate

Sublinks is free, open-source software, meaning no advertising, monetizing, or venture capital, ever. Your donations directly support full-time development of the project.

    • @[email protected]
      -84 months ago

      NLnet does via grants. But you work for the people who use your software, not the people who pay you

      • @baatliwala
        64 months ago

        Are they forcing you to use their software?