{"id":97799,"title":"Emdash - Open-source Agentic Development Environment (ADE)","tagline":"Run multiple coding agents in parallel.","body":"Hey YC! 👋 We’re Arne and Raban the we’re building [Emdash](https://emdash.sh). An [open-source](http://github.com/generalaction/emdash) desktop app that lets you work with multiple coding agents at once. We’re calling it an Agentic Development Environment (ADE).\n\n\u003chttps://youtu.be/jdIPf2cxf6w\u003e\n\n💬 **Problem**\\\nEvery time we used a coding agent, we'd start a task and ... wait. We tried running multiple agents on the same repo and ended up with branch chaos and merge conflicts. When a new model dropped – Opus, Codex, Gemini flash, Kimi, whatever – we had no clean way to test it against our current setup on the same task. We were bouncing between terminals, GitHub, and our IDE.\\\n\\\n⏩ **Solution**\n\n![uploaded image](/media/?type=post\u0026id=97799\u0026key=user_uploads/1755188/dd08968b-2b60-4a85-b998-e8cc9d017dfc)\n\nEmdash is an environment for agentic development that lets you run multiple agents side-by-side safely, review what each one did in one place, and create a PR when it looks right.\n\n🔍 **How it works**\n\n* Start a task → Emdash spins up a new git worktree so nothing touches your main directory\n* Choose any agent, out of 20+ providers(incl. Claude Code, Codex, Gemini)\n* Run multiple agents at once without conflicts\n* Compare diffs, make quick manual edits if needed, and create a PR\n\n🧰 **What’s included**\n\n* Worktree isolation per agent\n* Issue handoff from Linear / Jira / GitHub\n* One place to review diffs and ship PRs\n* Lifecycle scripts + CI/CD hooks\n* Best-of-N comparisons\n* Integrated file editor + browser preview\n* Remote project access via SSH\n\nWe natively embed \\~20 agent providers (including Claude Code, Codex, Continue, and Codebuff), so you can use the latest models inside the same workflow.\n\nTo get started run `brew install –cask emdash`or download directly from[ GitHub releases](https://github.com/generalaction/emdash/releases). We’re available on macOS and Linux.\n\n**🙏 Our Asks**\n\n1. Try [Emdash](https://emdash.sh/) - it’s free and open-source\n2. Give us a star on [GitHub](http://github.com/generalaction/emdash) **🌟**\n\nQuestions or feedback? Join our [Discord](https://discord.gg/m9APwzK4qd) or email us at [founders@emdash.sh](mailto:founders@emdash.sh)\n\n— Arne \u0026 Raban\n\n![uploaded image](/media/?type=post\u0026id=97799\u0026key=user_uploads/1755188/b2b6adc8-60e6-4701-9643-fa622c4a5e96)\n\n","slug":"PRP-emdash-open-source-agentic-development-environment-ade","created_at":"2026-02-14T18:48:17.293Z","updated_at":"2026-04-19T19:00:22.722Z","total_vote_count":22,"url":"https://www.ycombinator.com/launches/PRP-emdash-open-source-agentic-development-environment-ade","share_image_url":"//bookface-static.ycombinator.com/assets/ycdc/yc-og-image-c440a0ad1dacfb86eeeb343717479cc54d256614449b4ef719977a0a451f8bc8.png","company":{"id":31199,"name":"Emdash","slug":"emdash","url":"https://emdash.sh","logo":"https://bookface-images.s3.amazonaws.com/small_logos/65f0b89667ff290bb9620bcc2fa2d4c1e952c051.png","batch":"Winter 2026","industry":"B2B","tags":[],"search_path":"https://bookface.ycombinator.com/company/31199"}}