Emdash

Emdash is a desktop app for developers who want to run multiple coding agents at the same time without juggling terminal windows or context-switching between tools. Each agent gets its own isolated Git worktree, so parallel sessions don't collide. You orchestrate from a single dashboard.

The core idea is agent-native development. Instead of writing code yourself and occasionally asking an AI for help, you direct agents to do the work while you manage the flow. It's a different mental model from a traditional IDE or an AI-assisted editor like Zed.

What it supports:

• 25+ coding agents including Claude Code, Codex, Cursor, Amp, and Gemini. Mix agents per task or stick to one.
• MCP server connections for attaching tools without extra glue code
• CLI auto-detection that finds your installed agent CLIs automatically, no manual setup
• Built-in file editor so you can review and edit without leaving the app
• Git worktree isolation that keeps parallel agent sessions from interfering with each other

The worktree-per-agent approach is what separates Emdash from simply running Aider or Cline in multiple tabs. Each session is genuinely isolated at the filesystem level, which matters when agents are making overlapping changes across a codebase.

It's a macOS and desktop-native app, designed for individual developers who want to scale their output by running agents concurrently rather than sequentially. The app is fully open source and free to use.