amux vs Zed

Zed is a beautiful, fast code editor with real-time collaborative AI — the tool you interact with while you write. amux is an open-source control plane for running dozens of background AI agents in parallel — the tool that works while you sleep. They are not competitors. Many engineers use both. Updated July 2026.

Zed (zed.dev) is a high-performance, open-source code editor written in Rust. It is designed for speed and collaboration: instant startup, GPU-accelerated rendering, and a built-in AI "Assistant" panel that connects to Claude, GPT-4, and other models. Zed also supports real-time pair programming — multiple engineers can share a live editing session, with each person's cursor visible to the others. Zed is an editor you open, interact with, and actively use to write code.

amux is an open-source control plane for running an AI engineering team from a single dashboard or your phone. It launches, monitors, and self-heals dozens of Claude Code, Codex, or Gemini CLI sessions simultaneously — all running headlessly in the background. Built-in kanban board with atomic task claiming, notes, CRM, Gmail API, browser automation, and Google Calendar sync. Single Python file, MIT licensed, zero external dependencies. amux is not an editor — it is the orchestration layer that lets you run background agents at scale while you do other things.

At a Glance

How Zed's AI Works

Zed includes an "Assistant" panel — a chat interface you open inside the editor and use interactively while you write code. You can ask it to explain a function, generate a new implementation, review a diff, or answer questions about the codebase. Zed also offers inline completions that appear as you type, similar to GitHub Copilot.

Zed's collaborative editing mode is genuinely unique: multiple engineers can share a single live session over the internet, seeing each other's cursors and keystrokes in real time. This works for remote pair programming and for co-authoring code with an AI assistant that can also participate in a shared session.

What Zed does not do: run code autonomously, execute tasks in the background, manage a queue of work across multiple agents, or continue working when you are not actively in the editor. Zed's AI is an interactive assistant, not an autonomous agent.

How amux Works

amux runs on your machine or a cloud VM and manages a fleet of AI coding agents — Claude Code, Codex CLI, or Gemini CLI — all executing in the background inside tmux sessions. You define tasks on the shared kanban board, and agents pull tasks with atomic claiming so no two agents work on the same thing. A background watchdog monitors every session: it auto-compacts context overflow, auto-approves tool prompts (YOLO mode), restarts crashed sessions, and detects idle hangs.

You monitor everything from a web dashboard at https://localhost:8822, from the iOS app, or from your phone via the PWA. Agents work while you sleep, commute, or focus on other things. amux is not an editor and does not change how you write code — it only manages the background work agents do on your behalf.

Which Should You Use?

The question is usually not "Zed or amux" — it is "what am I trying to accomplish right now?" The two tools address completely different moments in the development workflow.

Use Zed when

• You are actively writing, reading, or reviewing code and want fast, interactive AI assistance
• You are pair programming with a teammate and want live cursor sharing and collaborative editing
• You want a modern editor with AI inline completions that rival GitHub Copilot
• You want an editor that is visibly faster than VS Code or JetBrains on large files
• You want inline AI explanations and code generation without leaving the editor

Use amux when

• You want to run 10–50 coding agents in parallel overnight and wake up to completed features and open PRs
• You have a queue of well-defined tasks (test generation, refactoring, documentation, bug fixes) that agents can handle without your active supervision
• You want to mix Claude Code, Codex, and Gemini CLI in the same fleet on the same task board
• You need complete infrastructure control — self-hosted on your own machine or VM, your own API keys
• You want phone visibility into what your agents are doing without SSH-ing into a server
• Your agents need context beyond the codebase — CRM data, email, browser automation, or scheduled triggers

Use both — the recommended pattern

This is how many engineers already work, even before amux existed. You use an editor — Zed, VS Code, or any other — for the code you are actively writing. You use amux for the code your agents are writing in the background at the same time.

A typical day might look like: open Zed to work on the feature you are shipping today; have amux running a fleet of agents in the background writing tests for last week's changes, generating API documentation, and updating dependency versions. You write code in Zed. Your agents write code in amux. Both produce commits to the same repo. Neither tool steps on the other.

A Note on Terminology

The phrase "Zed AI agents" appears in search queries but reflects a common confusion. Zed's AI Assistant is an interactive assistant — it responds when you ask it something, inside the editor, while you are present. It is not an agent in the autonomous-background-execution sense. An "AI agent" in the orchestration context means a process that runs headlessly, makes decisions, uses tools, and produces output without requiring a human at the keyboard. Zed does not run agents in this sense. amux does.

This is not a criticism of Zed — interactive AI assistance and autonomous background agents solve different problems. Understanding the distinction helps you choose the right tool for the right job.

Frequently Asked Questions

git clone https://github.com/mixpeek/amux && cd amux && ./install.sh
amux register myproject --dir ~/Dev/myproject --yolo
amux start myproject
amux serve  # → https://localhost:8822

Related comparisons: amux vs Cursor · amux vs Cline · amux vs GitHub Copilot · amux vs Jules · amux vs Devin · All comparisons →