# Developers Begin Building Apps on the AT Protocol

Developers are creating new applications on ATProto, the decentralized social networking protocol behind Bluesky. This move could expand the ecosystem beyond a single platform, promoting greater user control and interoperability. It matters as it challenges centralized social media models.

**Importance:** 3/5

## Sources

### Technology
- [Hacker News](https://lukekanies.com/writing/building-on-atproto/) — Thu, 23 Jul 2026 18:23:50 +0000