Misskey
The 2nd biggest service of the Fediverse, after Mastodon. Misskey is an open-source and distributed platform for microblogging. Development was started in 2014 by syuilo in Japan. It features an abundance of features such as Drive, Reactions and more as well as a very high UI customizability. While Misskey started centered around Bulletin Boards as its main feature, the growth in popularity due to the addition of a timeline that let users post short messages and view them in chronological order lead to a gradual shift in the main focus of development towards this kind of functionality. Misskey was not always a decentralized service, but became decentralized through the adoption of ActivityPub in 2018. https://misskey-hub.net/en/docs/about-misskey/
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