The Berlin-based startup Periwinkle is offering a new avenue for those wanting to leave centralized social media operated by Big Tech companies. Instead of joining a decentralized, open social networking app like Mastodon or Bluesky, Periwinkle allows anyone to set up a social media account on their own domain, under their own control. Built on top of the AT Protocol, the same open source technology that powers the X alternative Bluesky , Periwinkle aims to provide the infrastructure you need