Show HN: Ghostty-based terminal with vertical tabs and notifications (github.com)

A macOS terminal application named cmux has been introduced, designed specifically for AI coding agents. Built with Swift and AppKit, this native app optimizes performance by avoiding Electron, enhancing startup speed and reducing memory consumption. The terminal supports vertical tabs and an integrated notification system, allowing users to efficiently manage multiple coding sessions and receive real-time updates. Significant features include GPU-accelerated rendering using libghostty, compatibility with existing Ghostty configurations, and a scriptable CLI and socket API for workspace management. This development is significant for the AI/ML community as it streamlines the coding process for users who work with AI agents such as Claude Code and Codex. The notification feature provides context-aware updates, enabling users to track agent status across numerous sessions quickly. With functional enhancements like the ability to interact directly with a development server through an in-app browser pane, cmux facilitates a more integrated setup for AI development tasks. Overall, cmux represents a tailored solution for developers seeking a powerful, flexible terminal experience.