docrew vs Claude Cowork

docrew vs Claude Cowork

docrew -- made to deliver
others -- made to chat

Cowork wraps Claude in a 10GB VM to chat with your files. docrew puts AI directly on your OS to deliver results.

Claude Cowork spins up a 10GB Linux VM, processes one task at a time, and is macOS-only. docrew uses OS-native sandboxing with zero overhead, runs parallel agents in split panes, and delivers on macOS, Windows, and Linux. Cowork is a chat environment that happens to have tools. docrew is a delivery engine that happens to use chat as its interface.

Feature comparison

docrew vs Claude Cowork, side by side.

Sandbox type

docrew: OS-native (Seatbelt/bwrap)
Claude Cowork: 10GB Linux VM

Sandbox overhead

docrew: ~0 (syscall filters)
Claude Cowork: 2GB download, grows to 10GB

Platform support

docrew: macOS, Windows, Linux
Claude Cowork: macOS only

Parallel agents

docrew: Unlimited split panes
Claude Cowork: Single task

Document viewer

docrew: Built-in, select-to-context
Claude Cowork: Opens external apps

Mobile delegation

docrew: Native iOS/Android app
Claude Cowork: No mobile link

Workspace

docrew: Nested folders + colors
Claude Cowork: Flat project list

Enterprise integrations

docrew: Composio connectors
Claude Cowork: Deep native connectors

How docrew delivers

Zero overhead sandbox

docrew uses OS-level syscall filtering (Seatbelt on macOS, bwrap on Linux, Job Objects on Windows). No 10GB VM download, no RAM degradation, no macOS-only limitation.

True parallel execution

Run multiple agents in split panes simultaneously. Cowork processes one task at a time -- you wait for it to finish before starting another.

Inline document editing

View documents directly in docrew, select text, and send it as context to the agent. Cowork requires opening files in external applications.

Cross-platform + mobile

docrew runs on macOS, Windows, and Linux with native iOS/Android apps. Send tasks from your phone, desktop agent does the work. Cowork is macOS-only with no mobile connection.

Where Claude Cowork chats well

  • Deep enterprise integrations built directly into the Anthropic ecosystem.
  • Same-company model integration (Anthropic controls both Cowork and Claude).
  • MCP (Model Context Protocol) for extensible tool connections.
  • Artifacts feature for interactive code previews and visualizations.

Ready to deliver?

Cowork is a powerful enterprise chat environment backed by Anthropic. But it's still a chat environment -- one task, one VM, one platform. If you want AI delivering results across three operating systems, in parallel, with zero VM overhead, docrew is the delivery-first alternative.

Download docrew

Frequently asked questions

docrew uses Gemini via Vertex AI. Cowork uses Claude. The model family differs, but the key differentiators remain: runtime architecture, parallel execution, and cross-platform support. docrew uses an OS-native sandbox with ~0 overhead, supports parallel agents in split panes, has a built-in document viewer, and works on macOS, Windows, and Linux. Cowork uses a 10GB Linux VM on macOS only.

It depends on your setup. The VM starts at 2GB, grows to 10GB, uses ~6GB RAM, and has documented performance degradation over long sessions. docrew's syscall-level sandbox uses no extra disk space or RAM.

docrew uses Composio for integrations (Gmail, Slack, Calendar, GitHub, etc.) rather than MCP. The approach is different -- Composio manages OAuth and tokens server-side, so you connect once and the agent uses the tools.

No. Claude Cowork relies on Apple Virtualization Framework and runs on macOS only. docrew has native sandbox implementations for macOS (Seatbelt), Linux (bwrap), and Windows (Job Objects).

Compare docrew with others

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