Misskey.io

Misskey.io is the flagship public instance of Misskey, a free, open-source, decentralized microblogging platform in the Fediverse, primarily serving Japanese users with rich social features like emoji reactions and channels.

🚀 Overview

Misskey.io, operated by MisskeyHQ Inc. since 2019, is the largest instance of the Misskey software, hosting over 700,000 users and millions of notes. It offers a fun, customizable social experience with posts called 'notes,' advanced interactions, and seamless federation with other Fediverse platforms, providing an escape from centralized social media noise.

This project solves the issues of platform centralization, data ownership, and content moderation by enabling decentralized servers where users and admins control their space. It counters censorship and outages seen on services like Twitter/X.

Built for social media enthusiasts, communities, companies, and developers, especially in Japan (misskey.io restricts registration outside Japan to comply with laws on obscene content).

Misskey started in 2014 as a Japanese developer's vision for a better forum, evolving into a federated powerhouse to empower users with ownership and creativity.

✨ Key Features

Notes: Rich posts up to 3,000 characters with polls, attachments (images/videos/audio/files), quotes, and content warnings (enables expressive sharing)
Reactions: Emoji-based feedback with custom server emojis (more fun and precise than simple likes)
Channels & Antennas: Dedicated topic feeds and keyword-filtered timelines (improves content organization and discovery)
Drive: Built-in file storage with folders and management (simplifies media handling)
Optional: Federation via ActivityPub, roles/badges for monetization, charts for analytics; upcoming custom federation protocol

🛠 Tech Stack

Frontend: Vue.js, TypeScript
Backend: Node.js, TypeScript
Database: PostgreSQL, Redis
Auth: Custom (multi-factor auth, passkeys)
Hosting: Self-hosted (Docker, Vercel-compatible via community)

👥 Who Is This For?

This project is useful for:

Social media users seeking decentralized alternatives with cute, feature-packed UI
Teams and communities running custom instances or channels
Indie makers and developers exploring Fediverse software