OMAR: Open-Source TUI for Managing Hundreds of AI Coding Agents Hierarchically

OMAR (Open Multi-Agent Runtime) is a TUI (terminal user interface) for orchestrating large numbers of AI coding agents in parallel. Created by Karim and Shaokai after being impressed by Claude Code's ability to fix CI issues overnight, they built it to replace the pain of Ctrl+Tab through multiple Claude Code windows. The project is open-source and available at omar.tech.

Key Features

• Deep hierarchies: Agents managing agents, like a company. Create parallel organizations of arbitrary depth.
• Heterogeneous backends: Let Claude, Codex, Cursor, and Opencode collaborate as a team. Mix and match the best model for each task.
• Full control: Talk to and control any subagent. Navigate hierarchies with arrow keys and attach via popup.
• Flexible lifespans: Long-running or ephemeral agents, persistent state across sessions with memory snapshots.
• Messaging & integrations: Connect agents to Slack channels.
• Built on tmux: Supports all tmux commands and key bindings. Highly customizable.

Quick Start

One-liner (macOS/Linux):

$ curl -fsSL https://omar.tech/install.sh | sh

Homebrew:

$ brew install lsk567/omar/omar

From source (requires Rust 1.70+ and GNU Make):

$ git clone https://github.com/lsk567/omar.git
$ cd omar && make install

Prerequisites

tmux 3.0+ and at least one agent backend: Claude Code, Codex CLI, Opencode, or Cursor CLI.

Usage

1. Launch: $ omar
2. Copy a prompt into your Executive Assistant window. Agents will spawn and organize hierarchically.

The idea is to move from single-agent terminals to a swarm that mirrors organizational structures — an Executive Assistant delegates to teams, which delegate to subagents. All controllable from one TUI.