Misskey review: a free, open-source, decentralized microblogging platform in the Fediverse. Learn its features, self-hosting, and alternatives like Mastodon.
Misskey is a free, open-source, decentralized microblogging platform that is part of the Fediverse, the network of federated social servers connected via the ActivityPub protocol. It was created in 2014 by Japanese developer Eiji Shinoda (syuilo), initially as a BBS-style forum, later evolving into a microblogging platform after adding a timeline feature.
In 2018 Misskey adopted ActivityPub, enabling federation with other platforms such as Mastodon, and its flagship instance misskey.io launched in April 2019, later becoming one of the largest hubs of the Japanese-language Fediverse.
Posts on Misskey, called notes, support up to roughly 3,000 characters by default (configurable per instance) along with images, videos, audio, and polls. The platform is distinguished by custom emoji reactions rather than simple likes, topic-based channels, and antennas for building custom keyword- or account-based timelines.
Additional features include a built-in Drive for managing uploaded files, extensive UI theming and customization, configurable user roles and permissions, and a responsive Progressive Web App interface, all developed in TypeScript under the AGPLv3 open-source license.
Misskey itself is free, open-source software with no vendor pricing model; anyone can self-host an instance at their own infrastructure cost. Joining an existing public instance such as misskey.io is typically free for end users.
Because there is no central company selling Misskey, costs vary entirely based on whether a user joins an existing free instance or chooses to run and maintain their own server.
Misskey is a free, open-source, decentralized microblogging platform that is part of the Fediverse, using the ActivityPub protocol to federate with other servers like Mastodon.
Misskey was created in 2014 by Japanese developer Eiji Shinoda, known online as syuilo.
Yes, Misskey is free, open-source software released under the AGPLv3 license; joining a public instance is typically free, and self-hosting costs only your own server infrastructure.
Both are Fediverse platforms using ActivityPub, but Misskey has a distinct feature set including custom emoji reactions, channels, antennas, and a Drive file manager, along with strong roots in the Japanese Fediverse community.
Posts, called notes, default to up to roughly 3,000 characters, though this limit can be customized by individual instance administrators.
Yes, Misskey is self-hostable open-source software, and anyone can deploy their own instance and federate with the wider Fediverse.