Jack Dorsey, co-founder of Twitter and Block, announced a new app called Buzz, a group chat platform where people and AI agents can share the same conversations. Dorsey posted the announcement on X on July 21, 2026.
What Buzz aims to do
Buzz is designed to bring together workflows that today are often split across tools like Slack and GitHub. Dorsey described the product as “model-agnostic, decentralized, self-sovereign, and open source.” The platform includes native support for AI agents and offers the ability to manage GitHub projects from the same interface.
Who built Buzz
According to Buzz’s website, the product was developed by Dorsey’s company Block. Block also operates products such as Square, Cash App, Afterpay, and Tidal. That connection suggests Buzz is more than a lone founder’s side project and is tied to an existing company.
Open source and customization
Because Buzz is open source, teams can run their own instances and customize the platform to match their specific workflows. If a team needs a new feature, they can access the source code, build it, and deploy it themselves.
Competing approaches and similar projects
Other entrepreneurs are pursuing AI-native alternatives or extensions to Slack. For example, Georgios Konstantopoulos, partner and CTO at Paradigm, unveiled an open-source project called Centaur on May 21, 2026, which he described as a “virtual employee” that can run inside Slack or via an API. Konstantopoulos has argued that enterprise deployments often require self-hosting for security and control.
Availability and limitations
A free desktop app for Buzz is available now for macOS, Windows, and Linux, and the app’s source code has been uploaded to GitHub. The Buzz team notes the platform is in its “early stages,” so organizations should be cautious about migrating entirely at this point.
Why this matters
As startups and companies increasingly rely on AI agents to accomplish work, coordinating those agents and human collaborators across multiple platforms becomes a challenge. Buzz’s stated goal is to consolidate many of those workstreams into a single, customizable, open system while emphasizing decentralization and model flexibility.
Timeline
- May 21, 2026: Georgios Konstantopoulos introduced Centaur.
- July 21, 2026: Jack Dorsey announced Buzz on X.
- The Buzz desktop client is available for macOS, Windows and Linux; its source code is on GitHub.
