Emdash
A free, open-source desktop app for running multiple AI coding agents (Claude Code, Codex, and more) in parallel, each in its own isolated Git worktree, so you can compare approaches and merge what actually works.
🔗 Visit Emdash
Description
Running one AI coding agent at a time means waiting for it to finish before trying a different approach to the same problem — and if the agent goes down a bad path, you've lost the time either way. Emdash runs several coding agents at once, each working in its own isolated Git worktree, so different fixes or features can be explored in parallel without one attempt blocking another or agents stepping on each other's changes.
It works with the CLI coding agents developers already use — Claude Code, Codex, OpenCode, Amp, and others — rather than locking users into a single provider, and supports both local projects and remote machines over SSH. Issues and tickets from Linear, GitHub, Jira, GitLab, Asana, and several other trackers can be sent directly into an agent to work on. It's free and fully open-source (YC W26), with optional Cloud and Enterprise tiers priced on request for teams that want managed infrastructure instead of running it themselves.
💬 Our review
The short version: Emdash's core mechanic — parallel agents in isolated Git worktrees — solves a real problem with today's coding agents: trying multiple approaches to the same task without one attempt interfering with another or having to babysit them sequentially.
Being free and open-source with no provider lock-in (works with Claude Code, Codex, OpenCode, Amp, and more) is a genuine advantage over agent tools tied to a single vendor's ecosystem, and the ticket-tracker integrations (Linear, GitHub, Jira, and others) mean work can flow in from where a team already tracks it rather than requiring a separate task list. The tradeoff is that running several coding agents in parallel means paying for API usage across all of them simultaneously, which the tool itself doesn't control — the cost scales with how many agents you run at once, not with Emdash's own (free) price tag.
💰 Pricing
📊 Global score
🤖 AI-enriched data
Gratuit et open-source (self-hosted) ; Cloud et Enterprise sur demande pour infrastructure managée.
Pros
Exécute plusieurs agents en parallèle dans des worktrees Git isolés
Agnostique au fournisseur d'agent (Claude Code, Codex, OpenCode, Amp)
Support SSH pour machines distantes en plus des projets locaux
Gratuit et open-source, intégrations trackers (Linear, GitHub, Jira)
Cons
Coût d'utilisation API des agents non maîtrisé par l'outil lui-même
Nécessite de gérer plusieurs agents en parallèle, plus complexe qu'un seul agent séquentiel
Tiers Cloud/Enterprise sur devis uniquement, pas de tarif public