Jack Dorsey Launches BUZZ, an Open-Source Rival to Slack and GitHub

Jack Dorsey Launches BUZZ, an Open-Source Rival to Slack and GitHub

  • BUZZ combines team messaging, AI agents, code repositories, and workflows in one decentralized workspace.
  • AI agents receive cryptographic identities with permissions to collaborate alongside human teams securely.
  • Built on Nostr, BUZZ supports self-hosting and multiple AI models without vendor lock-in.

Okay, so Jack Dorsey is building something new called BUZZ. As someone who’s been in crypto for a while, I see this as a really interesting move – it’s basically an open-source alternative to Slack and GitHub, created by his company Block. What excites me is that it’s not just messaging and code stuff; they’re integrating AI agents too! And the coolest part? It’s all built on Nostr, meaning it’s decentralized. I’m hoping this will give us more control over our team communication and projects without relying on those big centralized platforms.

BUZZ Combines Team Collaboration and AI Agents

Block officially released BUZZ on July 21st. It’s a free, open-source platform designed to help people and AI work together in the same space. Jack Dorsey announced the launch on X, explaining that BUZZ is independent of any specific AI model, decentralized, gives users control over their data, and is open for anyone to use and modify.

This platform brings together all your team’s essential tools – like messaging, discussions, voice calls, file sharing, code storage, and automated processes – in one place. This allows teams to handle conversations, software projects, and even AI-driven tasks without constantly jumping between different apps.

we’re launching BUZZ!

We’ve created a new team communication platform designed to replace Slack and GitHub. It’s built to be flexible, secure, and fully open source – meaning anyone can use, review, and contribute to it. It works with any AI model and gives teams complete control over their data. 🐝

— jack (@jack) July 21, 2026

BUZZ is different from typical work tools because it gives each AI assistant a unique, secure digital identity and manages what it’s allowed to do. This allows AI agents to independently review code, run authorized tasks, participate in conversations, and keep a record of its work, just like a human employee.

Bradley Axen, who leads AI development at Block, believes future workplaces will be built around humans and AI working side-by-side. He says Block is focused on creating an open platform for this kind of collaboration, rather than a closed, company-specific system.

BUZZ works with a variety of powerful language models, including OpenAI’s Codex and Anthropic’s Claude Code, as well as others. This means organizations aren’t tied to a single AI provider and can choose the best model for their needs.

Nostr Powers Decentralized Identity and Open Collaboration

I’m really excited about what Block is doing with Nostr! They’re building something that could fundamentally change how we manage identity online – not just for people like me investing in crypto, but also for AI. Basically, everyone gets their own secure digital key, and that key controls your identity, who has access to what, and even your reputation across different platforms built on Nostr. It means I truly *own* my digital self and can take it with me wherever Nostr is supported.

The system keeps a secure and detailed record of everything that happens – including messages, automated tasks, code changes, and repository activity – providing full transparency. It’s also open source with an Apache 2.0 license, meaning developers are free to customize it, run their own version, or even build commercial applications based on it.

BUZZ can be run on a company’s own servers, or Block offers a managed hosting option at buzz.xyz. This first release includes apps for Windows, Mac, and Linux computers, but mobile apps are still being built.

This new launch shows Dorsey’s continued commitment to building a decentralized internet, even after leaving Twitter. He’s invested in several projects built on Nostr, like the messaging app Bitchat, and champions open-source options as alternatives to traditional social media platforms.

Earlier this year, Block laid off over 4,000 workers after Jack Dorsey highlighted the significant impact artificial intelligence would have on how businesses create products and function. BUZZ embodies this approach by using AI agents that actively participate in tasks, instead of simply acting as basic software helpers.

2026-07-22 22:12