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Orca

Agent Development Environment that runs Claude Code, Codex, Gemini, and other CLI agents in parallel across isolated git worktrees, with terminals, browser, diff review, and git tools built in.

Open Source Alternative to:

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Orca is an Agent Development Environment (ADE) built specifically for running AI coding agents at scale. Where a traditional IDE puts you in the driver's seat, Orca is designed for workflows where multiple agents are doing the driving simultaneously.

The core idea: every task gets its own isolated git worktree. You can fan a single prompt across five agents, let them work in parallel, then compare outputs and merge the winner. No stashing, no branch conflicts, no context bleed between tasks. Each workspace is self-contained.

What's built in:

  • Parallel agent support for Claude Code, Codex, Gemini, Grok, Cursor CLI, GitHub Copilot, OpenCode, and 25+ others. Bring your own subscriptions.
  • Ghostty-class terminal with WebGL rendering, infinite splits, scrollback search, and state restored on restart.
  • Embedded Chromium browser per worktree, with Design Mode: click any UI element to send its HTML, CSS, and a screenshot directly into an agent prompt.
  • Inline diff annotation lets you drop markdown comments on any diff line and send them back to the agent, without leaving the app.
  • SSH worktrees for running agents on a remote machine, with auto-reconnect, port forwarding, and passphrase caching.
  • GitHub and Linear integration for browsing PRs, issues, and project boards in-app, opening worktrees from tasks, and reviewing or approving PRs without switching context.
  • Mobile companion (iOS and Android) for monitoring live agent status, checking usage, and keeping work moving away from your desk.
  • Orca CLI so agents can drive Orca itself: create worktrees, take snapshots, fill forms, click elements.

Oca runs on macOS (Apple Silicon and Intel), Windows, and Linux. It's MIT-licensed and free. The project ships updates continuously, backed by Y Combinator.

It's a practical fit for developers who are already running Kiro or similar agent tools and want a unified environment rather than a patchwork of terminal windows and browser tabs.

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