A self-hostable, Twitter/Bluesky-like microblogging service with Markdown support, syntax highlighting, and RSS feed following.
fx is an open-source, self-hosted microblogging service that functions like a public notebook, allowing users to quickly write, publish, and retrieve posts via a web interface. It solves the problem of content ownership and complex publishing workflows by providing a lightweight, controllable alternative to social media platforms and static site generators.
Individuals, teachers, and writers who want a personal, self-hosted platform for microblogging, note-taking, or sharing content without algorithmic interference or platform risk.
Developers choose fx for its minimal resource usage, ease of self-hosting, and focus on user control—offering a streamlined, web-based publishing experience with built-in Markdown, LaTeX, and backup features.
An efficient (micro)blogging service that you can self-host
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Uses only a few MB of memory, as highlighted in the features, making it cost-effective for self-hosting on minimal infrastructure like a basic VPS.
Enables publishing and editing from any device via a web interface, reducing the friction compared to static site generators that require local builds and commits.
Includes built-in syntax highlighting and math expression rendering with LaTeX, facilitating rich content creation for technical or academic posts without extra tools.
Offers API-driven backup to plain text files, ensuring users retain full control and can easily migrate or restore their data, as demonstrated in the backup script example.
Designed for individual use with no built-in support for multiple users or permissions, limiting its suitability for collaborative projects or team blogs.
Automatic backups require external scripting and services like GitHub Actions or Forgejo, which can be daunting for non-technical users to configure and maintain.
Lacks native engagement features; users must rely on POSSE (Publish on Your Own Site, Syndicate Everywhere) for comments and interactions, which may not be seamless for community building.
fx is an open-source alternative to the following products:
Bluesky is a decentralized social network protocol and application that uses the AT Protocol to give users control over their data and algorithmic choice.
Twitter is a social media platform that enables users to post and interact with short messages called tweets, follow other users, and engage in real-time conversations.