Block, led by Jack Dorsey, unveils AI collaboration platform "Buzz" aiming to move away from dependence on Slack and GitHub

Block has launched Buzz, an open-source collaboration platform built on Nostr.

Buzz brings chats, code repos, and automated workflows into one workspace for humans and AI agents to work together.

It also supports third-party agents such as Claude Code and Codex for multi-agent collaboration.

Block is positioning Buzz as an open, decentralized alternative to tools like Slack and GitHub, with more control over data and agents.