Emdash is an open-source agentic development environment delivered as a desktop application. It lets engineering teams develop software faster by running multiple coding agents in parallel, supporting 20+ agent providers including Claude Code, Codex, and Gemini. Emdash uses git worktree isolation so agents can run simultaneously without conflicting with one another. It was founded in 2025 and is a Y Combinator Winter 2026 company based in San Francisco.
Emdash
ActiveOpen-source Agentic Development Environment
Total raised
$500K
1 round
Stage
Seed
Jan 2026
Team
1-10
since 2026
Pricing
—
Founded
2026
San Francisco, United States
Agent-ready
—
Open-source agentic development environment delivered as a desktop application
Runs many coding agents in parallel within a single workspace
Support for 20+ agent providers including Claude Code, Codex, and Gemini
Git worktree isolation so concurrent agents do not conflict with one another
Unified interface for orchestrating multiple agents across tasks
Provider-agnostic design that lets teams choose or mix coding agents
Local desktop execution model for development workflows
Open-source codebase that teams can inspect and self-host
12/100
Early
MCP server
Public API
Webhooks
OAuth 2.0
SDKs
No public agent surfaces detected yet.
Jan 2026 Seed $500K ● Y Combinator
Capital network
$500K raised ·1 backer·10 network links
- Backers1
- Shared portfoliocompanies these backers also fund
- Extended networkfunds that co-invest alongside them
Resolve AI
AI SRE for complex production environments
AI AgentsAI Developer Tools
deepset
Haystack framework and deepset Cloud for enterprise LLM apps
AI AgentsAI Developer Tools
Wordware
Build AI agents by writing in plain English
AI AgentsAI Productivity
Wonderful
Multilingual enterprise AI agents for customer service
AI AgentsAI Productivity
Cursor
The AI code editor built for productive engineers.
AI CodingAI Agents
Oasis Security
Agentic access management to secure AI agents and non-human identities
AI AgentsAI for Cyber Defense
- Is Emdash open source?
- Yes, Emdash is an open-source agentic development environment delivered as a desktop application.
- Which coding agents does it support?
- It supports 20+ providers, including Claude Code, Codex, and Gemini.
- How does Emdash prevent agents from conflicting?
- It uses git worktree isolation so that multiple agents can run at the same time without interfering with one another's working trees.
- Who is Emdash designed for?
- It targets engineering teams that want to develop software faster by running multiple coding agents in parallel.
Discussion
Sign in to join the discussion.
Sign inExplore more around Emdash
Contextual paths to related AI startups, deals and rankings.