Bluesky

Bluesky
Bluesky logo since December 2023
Screenshot of the Bluesky desktop interface, featuring the account of the English Wikipedia, March 2025
Type of site
Social networking service
Available in40 languages
Founded
  • 2019 (within Twitter)
  • 2021 (independent)
HeadquartersSeattle, Washington, United States
Area servedWorldwide
OwnerBluesky Social, PBC
Founder(s)Jack Dorsey
CEOJay Graber
Key peopleJay Graber, Jeremie Miller, Mike Masnick, and Kinjal Shah
URLbsky.app
bsky.social
RegistrationRequired
Users
  • Over 36.6 million total registered users (as of 14 June 2025)

  • 1.7 million daily interacting users (as of 6 June 2025)
LaunchedFebruary 6, 2024 (public release)
Current statusActive
Native client(s) on
Written inTypeScript, Go
ASN19317

Bluesky is a microblogging social media service. Users can share short posts containing text, images, and videos. It is owned by Bluesky Social PBC, a benefit corporation based in the United States.

Bluesky was developed as a reference implementation of the AT Protocol, an open communication protocol for distributed social networks. Bluesky Social promotes a composable user experience and algorithmic choice as core features of Bluesky. The platform offers a "marketplace of algorithms" where users can choose or create algorithmic feeds, user-managed moderation and labelling services, and user-made "starter packs" that allow users to quickly follow a large number of related accounts within a community or subculture. The AT Protocol offers a domain-name–based handle system within Bluesky, allowing users to self-verify an account's legitimacy and identity by proving ownership of a domain name.

Bluesky began in 2019 as a research initiative at Twitter, becoming an independent company in 2021. Development for the social app accelerated in 2022 after Elon Musk's acquisition of Twitter and subsequent severing of ties between the companies. Bluesky launched as an invite-only service in February 2023 and opened registrations in February 2024. Former Twitter CEO Jack Dorsey left Bluesky Social's board by May 2024. The social media platform experienced a surge in activity in November 2024.