Codename Goose
Block’s open-source AI software engineer. Free Claude Code alternative: ships both a TUI and a desktop app, backed by a real company (Block — Square / Cash App / Tidal parent), bring-your-own-model. The vendor backing matters for longevity vs the solo-maintained alternatives in the same cluster.
- Vendor: Block
- Repo: github.com/block/goose
- License: Apache 2.0
- Surfaces: TUI (CLI) + desktop app (Mac at time of source; Linux/Windows in progress)
- Models supported: Claude, GPT-4, Mistral, Ollama (local), DeepSeek R1 via OpenRouter free tier
- Extension: plugins, plain APIs, MCP servers
Capabilities
- Codebase understanding
- Multi-component refactoring
- Debugging
- Deployment
- Basic test execution
Why it matters
Goose is the wiki’s cleanest “free Claude Code” entry — and the only one in the cluster with corporate backing of consequence. The DeepSeek R1 + OpenRouter free-tier combination is the “$0 Claude Code” recipe (pairs with the R1-0528 release).
Position in the free-coding-tool cluster
| Tool | Surface | Backed by |
|---|---|---|
| cline | VS Code extension | Cline Labs |
| opencode | Terminal | SST |
| void-ide | Full editor (Electron) | Void team |
| continue | VS Code/JetBrains extension | Continue.dev |
| Goose | TUI + desktop app | Block |
Sources
- Codename Goose: FREE AI Software Engineer — WorldofAI walkthrough; task manager + todo app demos
See Also
- Claude Code — the commercial alternative
- Self-Hostable Alternatives
- DeepSeek / OpenRouter — the $0 model combo
- MCP — extension protocol