Buzz: Jack Dorsey Unveils Open-Source Workplace Chat for Teams and AI Agents

ArticleAmanda SilberlingNews

Jack Dorsey and Block have launched Buzz, a decentralised, open-source group chat platform that brings human team members and AI agents into shared conversations.

Key points

  1. Buzz merges Slack-like communication, native AI agents, and GitHub project management into a single interface.
  2. Dorsey describes the application as model-agnostic, decentralised, self-sovereign, and open source.
  3. Free desktop applications are available for macOS, Windows, and Linux, with the code hosted on GitHub.
  4. Teams can self-host and customise their own instance to match internal requirements.
  5. The platform is currently in its early stages of development.

Why it matters

As companies increasingly deploy AI agents for daily tasks, collaboration across fragmented services becomes cumbersome. Buzz aims to unify real-time messaging, code management, and automated agents into one workspace.

Analysis

Buzz directly targets the tool sprawl between Slack and GitHub by treating AI agents as native participants alongside human staff. Rather than building add-ons for incumbent services—as seen with competing tools like Centaur—Block is providing an independent, self-sovereign alternative. While the open-source architecture offers security and control for engineering teams, its early developmental stage means teams may hesitate before fully migrating their communications.

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Summary generated by AI (Gemini 3.8 Flash, 27 September 2026). It may contain errors – the original source is authoritative.

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