Jack Dorsey has launched Buzz, a new workplace collaboration tool designed to compete with Salesforce and Microsoft, specifically targeting established platforms like Slack and GitHub. Developed by Dorsey’s company Block, Buzz aims to unify fragmented team tools by integrating messaging, coding, and AI workflows. This launch responds to the evolving needs of workplaces where AI agents collaborate directly with teams on various tasks, while utilizing decentralized protocols like Nostr to allow for self-hosting and open AI participation in team environments.

Buzz: Buzz is the new open-source workplace collaboration platform launched by Block on July 21, 2026, designed for teams of humans and AI agents. It merges messaging, coding, project management, and AI workflows into a single interface as an alternative to existing tools. Built with decentralized elements like the Nostr protocol, Buzz aims to support self-hosted and model-agnostic AI integration.
Slack: Slack is the Salesforce-owned workplace messaging and collaboration platform that Buzz is positioned to challenge through its unified AI-inclusive features. The tool is frequently referenced in coverage of Buzz as the incumbent for team communication that the new platform seeks to disrupt. Buzz’s launch emphasizes reducing dependency on separate messaging apps like Slack.
GitHub: GitHub is the Microsoft-owned code repository and development platform that Buzz targets by embedding similar coding and project management functions directly into its chat environment. Coverage of the launch highlights Buzz’s goal of handling GitHub-style workflows alongside messaging and AI agents without switching tools. This integration is presented as a core differentiator for the new platform.
Microsoft: Microsoft owns GitHub, the code collaboration platform targeted by Buzz for its integrated coding and project management features. The news positions Buzz as a direct alternative that combines GitHub-style development tools with chat and AI agents in one environment. This reflects broader efforts to consolidate software development workflows.
Salesforce: Salesforce owns Slack, the workplace messaging platform that Buzz directly challenges as part of its push into integrated team collaboration. The development highlights growing competition in enterprise communication tools amid the rise of AI-driven workflows. Salesforce’s Slack is cited in announcements as a key target for Buzz’s messaging capabilities.
Jack Dorsey: Jack Dorsey, co-founder of Twitter and Block, announced the launch of Buzz on July 21, 2026, as an open-source workspace tool developed by his company Block. The initiative stems from Block’s desire to reduce its own reliance on fragmented productivity software. Dorsey has positioned Buzz as a unified platform for teams and AI agents to handle messaging, coding, and workflows together.

Launch Context: Buzz was developed and released by Jack Dorsey’s company Block specifically to address fragmentation in team tools by unifying workflows for humans and AI agents.
Market Positioning: Announcements frame Buzz as a response to evolving workplace needs where AI agents collaborate directly with teams on coding, planning, and communication tasks.
Technology Approach: The platform incorporates decentralized protocols such as Nostr to enable self-hosting and open AI agent participation in team environments.