Misskey

Misskey is a federated social networking server for running your own community in the Fediverse. It implements ActivityPub to interoperate with other platforms (for example Mastodon) while offering a feature-rich web UI and many social interaction tools.

Key Features

• ActivityPub federation for following, posting, and interacting across the Fediverse
• Multiple timelines (local, global, and social/following) and rich post composer options
• Emoji reactions (including custom instance emoji) and advanced interaction features (renotes/boost-like sharing, quotes depending on configuration)
• Built-in “Drive” for user file storage/attachments and media management
• Lists, user discovery, notifications, and content warnings/sensitive media controls
• Instance customization (themes/branding, custom emojis, role/permission configuration depending on version)
• Moderation and administration tooling (user management, reporting, federation controls, and anti-abuse measures)

Use Cases

• Host a private or public community microblogging site that still federates outward
• Provide an organization/club social space with custom branding, emoji, and policies
• Run a regional or interest-based Fediverse server with strong moderation controls

Limitations and Considerations

• Operational complexity can be higher than simpler Fediverse servers due to feature breadth and frequent version changes; upgrades should follow official notes closely.

Misskey is well-suited for communities that want a modern, highly interactive Fediverse experience. It combines ActivityPub interoperability with extensive social features and strong instance-level customization, making it a common choice for admins seeking more than “baseline” microblogging.