bb

About bb

bb is an agentic orchestrator GUI that works with Claude Code, Codex, OpenCode, Cursor, and other ACP-compatible agents using your existing subscriptions. It launched this week and is open source under an MIT license. The core idea is that almost anything in bb can be changed or extended with a single prompt.

Review

bb positions itself as software you can make your own rather than a fixed tool with a predetermined feature set. It's built on an extension system that users can access directly, and the same system powers many of bb's own features. The project is early-stage and evolving quickly, with version 0.36.0 mentioned in user testing.

Key Features

• Agent orchestration across multiple providers including Claude Code, Codex, OpenCode, and Cursor, using your existing subscriptions
• Prompt-driven self-modification: ask for a task tracker, and bb builds the UI for it, then creates a skill that teaches your agents how to read, create, and manage tasks
• Plugin architecture where workflows, side chat, crons, inline previews, and remote access are all implemented as plugins
• Server mode accessible via npx bb-app@latest that runs cross-platform in a browser
• Open source and MIT licensed, so you can clone and run it locally

Pricing and Value

bb is listed as free on its launch page. The tool works with your existing agent subscriptions rather than requiring its own paid tier. Since it's MIT licensed, there's no cost to run or modify the software itself.

Pros

• Works with agents you may already pay for, so there's no separate subscription to manage
• Extension system is the same one bb uses internally, which means user-built features have the same capabilities as built-in ones
• Open source licensing allows full customization and local control
• Server mode provides a cross-platform option while native desktop builds are still in development
• User-built extensions so far include tiling systems for agent threads, automated code review, markdown editors, and a DAW inside bb

Cons

• Native desktop builds for Linux and Windows are on the roadmap but not yet available; Mac users are the only ones with a desktop app right now
• Notifications for the web UI lack standardized paths, which one user noted as a current limitation
• Not well suited for users who want a settled, maintenance-free daily driver; one tester described it as evolving rapidly and not yet a stable tool

bb fits developers who already use CLI coding agents and want more control over their orchestration environment. It's also suited to people who enjoy modifying their tools and don't mind an early-stage project with rough edges. If you prefer a finished product with predictable behavior, this isn't the right time to adopt bb.



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