Create index.md

Author: sonyakun

topics/misskey/index.md

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+---
+created_by: syuilo
+display_name: Misskey
+github_url: https://github.com/misskey-dev
+logo: misskey.png
+related: activitypub, fediverse, microblog, social-network, webfinger
+released: 2014
+short_description: Misskey is open source software for free distributed microblogging network.
+topic: misskey
+url: https://misskey-hub.net/
+wikipedia_url: https://en.wikipedia.org/wiki/Misskey
+---
+Misskey is an open source software for free microblogging. The backend uses Fastify, and the frontend is written in JavaScript (Vue.js). It also implements ActivityPub and WebFinger procotr to achieve interoperability with other social networks.