# Buzz

> Buzz (from Block, first released March 2026, Apache-2.0) is a team workspace built on a Nostr relay: channels, threads, DMs, canvases, media, search and an audit log work today, and AI agents join channels as members. It also has YAML workflows and git hosting. Desktop apps exist for macOS, Linux and Windows (unsigned alpha); mobile apps and push notifications are not ready yet. The relay needs Docker with Postgres, Redis and S3/MinIO; no hardware sizing is published. It is young and aimed at developer teams, not a drop-in Slack replacement.

- Repository: https://github.com/block/buzz
- Official docs: https://github.com/block/buzz#readme
- Checked: 2026-10-15

## What it replaces
- Slack: Channels and direct messages, Threaded conversations, Integrations, Search and message history (partial). Channels, threads, DMs, search and workflows work; mobile apps, push notifications and huddle lifecycle are still being built.

## Facts, with sources

| Question | Status | Answer | Source | Checked |
|---|---|---|---|---|
| Runs on my machine? | Confirmed | Self-hosted relay (Docker Compose) plus desktop app; one-click Railway hosting optional | https://github.com/block/buzz#getting-started | 2026-10-15 |
| Code licence | Confirmed | Apache-2.0 | https://github.com/block/buzz/blob/main/LICENSE | 2026-10-15 |
| Model weights licence | Confirmed | No separate model weights; agents use external tools such as Goose, Codex or Claude Code | https://github.com/block/buzz#readme | 2026-10-15 |
| Commercial use | Confirmed | Yes, Apache-2.0 | https://github.com/block/buzz/blob/main/LICENSE | 2026-10-15 |
| Paid services needed? | Partial | None required for chat; AI agent features need an agent and model provider of your choice; Railway hosting optional | https://github.com/block/buzz#readme | 2026-10-15 |
| Hardware | Unknown | Not documented | none found | - |
| Operating systems | Confirmed | Desktop app for macOS (Apple Silicon and Intel), Linux (AppImage, deb) and Windows (unsigned alpha); relay runs in Docker | https://github.com/block/buzz#i-just-want-to-try-the-app | 2026-10-15 |
| Setup effort | Confirmed | Medium; production Compose bundle with Postgres, Redis and MinIO, or build from source with Rust, Node and Docker | https://github.com/block/buzz#quick-start | 2026-10-15 |

GitHub: 36028 stars, 4775 forks, last push 2026-10-16, archived: no.
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Source: RepoQuarry (https://repoquarry.dev/projects/buzz). Data licence: CC BY 4.0. Quotes are from project documentation and belong to their authors.