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Preflight note. The closest open issue is #40347 . Related: #47316 (closed), #38276 (closed as out of scope for this repo), #36011 (stale). I am filing this as a consolidation and extension of #40347 with corrected technical framing (Claude Code plugin development against Desktop extensions), named primary sourcing for the Cowork Linux-VM architecture, and current market data. Happy to merge into #40347 if maintainers prefer; please route rather than close if a different venue is correct.

On scope: this issue concerns Claude Code in two concrete ways. (1) Claude Code plugins are developed and tested against Claude Desktop extensions, which has no Linux build, so plugin work currently requires switching OS. (2) Cowork invokes the Claude Code binary inside a Linux VM on macOS, so the Linux execution path already exists inside the Claude Code product and is the practical thing missing as a published target.

What this issue is asking for A public Anthropic position on Linux desktop support, and ideally a first-party build. A reasoned "not on the current roadmap, and here is why" would resolve most of what this issue is about. There is, to my knowledge, no public statement on Linux desktop support; the absence is itself part of the problem.

Anthropic distributes Claude Desktop for macOS and Windows only. The official download page states "Not available for Linux". Claude Code (the CLI) runs natively on Linux but is a terminal tool, not a substitute for the desktop GUI. Desktop extensions (the surface Claude Code plugins are tested against), computer use, desktop dictation and Cowork are available only in Claude Desktop. Linux users therefore have no officially supported graphical path to these capabilities, and in particular no way to develop and test Claude Code plugins as desktop extensions without switching to macOS or Windows.

Why this is structurally hard to justify Anthropic already builds, signs and distributes Linux software. Per code.claude.com/docs/en/setup, Claude Code ships signed apt, dnf and apk repositories and per-architecture binaries (linux-x64, linux-arm64, musl variants). The pipeline exists.

The Cowork agent already depends on Linux inside the product. Independent reverse-engineering by Simon Willison on launch day (12/01/2026), corroborated by Pluto Security and pvieito ("Inside Claude Cowork"), found that on macOS Cowork boots a custom Ubuntu 22.04 VM via Apple's Virtualization Framework (VZVirtualMachine) and runs the Claude Code binary inside it under bubblewrap and seccomp. Anthropic's own documentation confirms the hypervisor split: Apple Virtualization.framework on macOS, Hyper-V on Windows. The community project johnzfitch/claude-cowork-linux demonstrates the same Cowork mode running natively on Linux x86_64 by stubbing the macOS native modules and skipping the VM entirely. The Linux capability already exists inside the product; what's missing is a published Linux target.