Bluesky social media service

Bluesky is a microblogging social media service developed by Bluesky Social PBC, a public benefit corporation based in the United States. The platform allows users to share short posts containing text, images, and videos. It was initially launched as a research initiative within Twitter in 2019, aiming to explore the possibility of decentralizing social media. In 2021, Bluesky became an independent company and has since developed the Authenticated Transfer (AT) Protocol, an open standard for distributed social networking services. The platform emphasizes user control over data and experience, offering features like a 'marketplace of algorithms' where users can choose or create algorithmic feeds, user-managed moderation, and labeling services. As of June 2025, Bluesky has over 36.5 million total registered users and 1.7 million daily interacting users. The company is headquartered in Seattle, Washington, United States, and operates globally.