Ghostty vs iTerm2

Ghostty uses a highly optimized GPU-based renderer written in Zig. It focuses on minimizing input latency, providing what many consider the 'snappiest' feel in the industry. It handles high-throughput text and large files with ease, maintaining high frame rates even on ProMotion displays.

iTerm2 introduced a Metal-based renderer to improve performance. While significantly faster than the default macOS terminal and its own legacy renderer, it can occasionally struggle with extremely large buffers or complex layouts compared to Ghostty's modern architecture.

Uses a simple, text-based configuration file. This is perfect for users who store their 'dotfiles' in Git. It avoids complex menus, though it requires users to know the specific keywords for the settings they wish to change.

Offers a massive, searchable GUI preferences window. Users can tweak everything from color presets to per-profile trigger behaviors without ever touching a config file. It also supports dynamic profiles via JSON for automated setups.

Ghostty supports basic window management and tabs, but it currently lacks the deep internal split-pane logic found in iTerm2. It relies on the user potentially using a CLI multiplexer like tmux or Zellij for advanced layouts.

iTerm2 has industry-leading split pane support. You can split vertically and horizontally infinitely, save 'Window Arrangements,' and even use 'broadcast' input to send the same command to multiple panes simultaneously.

Ghostty focuses on being a solid terminal core. It doesn't have a built-in plugin system or a high-level scripting API yet, as its philosophy favors doing one thing (terminal emulation) exceptionally well.

Features a full Python API that allows users to write scripts that control the terminal's behavior, create custom status bar components, or interact with terminal content programmatically.

Provides standard, fast search within the scrollback buffer. It is efficient and does not slow down the terminal, but it lacks some of the 'time-travel' features of older, more mature emulators.

Features 'Instant Replay,' which lets you see exactly what was on the screen at a specific time. Its search is strong, supporting regular expressions and highlighting all matches across a large scrollback history.

Supports standard terminal sequences and works well with all modern shells. It focuses on protocol compatibility rather than proprietary helper scripts that modify the shell environment.

Offers proprietary shell integration scripts for zsh, bash, and fish. This enables features like knowing which directory you are in to open new tabs there, or showing a blue circle next to successful commands.

While it feels native to macOS, Ghostty is designed to be cross-platform, with strong support for Linux. This allows developers to maintain a consistent terminal experience across different operating systems.

iTerm2 is strictly a macOS application. It relies heavily on Cocoa APIs and macOS-specific frameworks, meaning it will likely never be available for Linux or Windows users.

Because it is written in Zig and uses native libraries, Ghostty has a very small memory footprint and very low CPU usage at idle. It is highly efficient even when rendering complex layouts.

iTerm2 can become quite resource-heavy, especially with many open tabs, large scrollback buffers, and several background features enabled. It is an older Objective-C app with significantly more 'overhead.'