Bluesky has been compared to Mastodon and is backed by Twitter cofounder Jack Dorsey.
The Jack Dorsey-backed platform, Bluesky, is a Twitter clone with a very similar format to its established rival.
Bluesky users set up a profile by choosing a picture, bio, display name, and domain name.
However, unlike Mastodon, users don't have to choose a server when they sign up – something that appeared to be an issue for Mastodon users who found the process too complicated.
In April last year, Bluesky clarified the company's relationship to Twitter, saying: "The bluesky project originated with Twitter in 2019, but the Bluesky PBLLC established this year is an independent company focused on decentralized social network R&D."