Sebastian Vogelsang
CEO at Birdsong Apps GmbH
Leaving the Walled Gardens: One Social Graph, Infinite Experiences
What if every social app didn't need to start from zero? With ATProto, we finally have a shared, open social graph—already home to over 33 million users—that any developer can tap into. In this talk, I'll share how apps like Flashes and Bluescreen build on top of this network, curating content in entirely different ways without fragmenting the community. We'll explore how leaving walled gardens behind enables more accessible, personalized, and creative social experiences—and why now is the perfect time to build.
About Sebastian
Sebastian Vogelsang is an iOS developer and IT consultant from Berlin with over 15 years of experience. He has developed more than 50 apps for clients like Zalando, MAN, and Cartier. As the creator of Skeets and Flashes for Bluesky - top-ranked, accessibility-focused apps - he combines design, performance, and inclusion. Through his company, Birdsong Apps GmbH, he builds fast, polished, and user-friendly mobile apps.
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