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Emdash

Open-source agentic development environment for running many coding agents in parallel.

generalaction/emdash

Maintained by General Action

Emdash, from YC W26 company General Action, is a free, open-source desktop app for macOS, Windows and Linux that runs multiple coding agents at once, each in its own Git worktree with its own branch, terminal and conversation. It is provider-agnostic (Claude Code, Codex, Cursor, Amp, Antigravity and 25+ others), pulls issues from Linear, Jira, GitHub and others, schedules recurring agent work, includes an in-app browser, diff review, PR creation and CI monitoring, connects to remote machines over SSH, and syncs prompts, skills and MCP servers across agents.

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Connections

Relations from the Harness Hub knowledge graph, as charted in the State of Harness reports.

Maintained by · 1

  • General ActionOrganisation

Built on · 3

Similar entries · 1

Sources

  1. Emdash website
  2. YC company page
  3. GitHub repository (API metadata)