Jack Dorsey launches Buzz, a group chat app that puts AI agents in the same room as your team
The Twitter and Block co-founder wants to replace Slack and GitHub with a single open-source workspace where human workers and AI agents share the same conversations.
Key points
- Block, the company behind Square and Cash App, launched Buzz on 21 July 2026.
- Buzz is a free, open-source group chat platform that combines team messaging, AI agents, and GitHub project management in one window.
- Jack Dorsey announced the app on X, calling it "model-agnostic, decentralized, self-sovereign, and open source".
- Buzz describes itself as being in its "early stages".
- Free desktop apps are available now for macOS, Windows, and Linux.
Jack Dorsey, co-founder of Twitter and payments company Block, launched a workplace chat app on Tuesday called Buzz. Its pitch is direct: replace Slack (the popular office messaging tool) and GitHub (where developers store and manage code) with a single workspace where people and AI agents talk in the same thread.
An AI agent is software that carries out multi-step tasks on its own, drafting documents or running code without a human clicking through every step. As companies hand routine work to these agents, tracking what the humans and the bots are each doing gets genuinely messy. Buzz tries to solve that by putting everyone in the same chat window. Context worth having: a week before Buzz launched, we covered OpenAI's ChatGPT Work, an agent that plugs directly into Slack rather than trying to replace it, which shows just how differently builders are approaching the same underlying problem.
Block built the product. Dorsey's company also runs Square, Cash App, Afterpay, and Tidal, so this isn't a side project.
Because Buzz is open source, its underlying code is freely available for anyone to inspect or modify. Teams can tailor it to their own workflows without waiting for a product roadmap. That's a real contrast with Slack, which is a closed, subscription-based product.
Dorsey isn't alone in spotting this gap. Georgios Konstantopoulos, CTO at crypto investment firm Paradigm, unveiled a similar open-source product in May 2026 called Centaur. He describes it as a "virtual employee" that works either inside Slack or through an API, a technical connection that lets two software systems talk to each other. Konstantopoulos argued on X that there's "a lot of room for improvement for agents that live in Slack and can do more work than just coding for teams."
Should teams switch to Buzz right now?
Probably not yet. Buzz itself admits the platform is in its "early stages", which means rough edges, missing features, and a real chance things break. Porting a whole team's communication history to a new tool carries genuine risk.
For newer startups already relying on AI agents and not yet committed to Slack, Buzz is worth a look. Everyone else should monitor progress first.
The free desktop app is available now for macOS, Windows, and Linux, with source code published on GitHub. First reported by TechCrunch AI, no pricing for any paid tier has been announced.
