GitHub - manaflow-ai/cmux: Ghostty-based macOS terminal with vertical tabs and notifications for AI coding agents
Hacker News
February 19, 2026
AI-Generated Deep Dive Summary
Cmux emerges as a cutting-edge solution for developers seeking a high-performance terminal tailored for managing multiple AI coding agents. This macOS-native application integrates vertical tabs, notifications, and an in-app browser, offering seamless integration with tools like Claude Code. Its design addresses common challenges faced by developers juggling numerous sessions, providing clear, context-aware alerts that simplify tracking active agents without tab overload.
The development of cmux was driven by the limitations of traditional terminals and Electron-based apps, which often lag or complicate workflows. By utilizing Swift and AppKit, cmux delivers superior performance with GPU-accelerated rendering, ensuring smooth operation. Its notification system stands out, offering context-aware alerts that highlight active agents through visual cues like blue rings and
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Originally published on Hacker News on 2/19/2026