When comparing “Pretty Good Terminal” and Oh My Zsh, the core difference is that they are entirely different categories of software.
The comparison is a common point of confusion for beginners: “Pretty Good Terminal” (PGT) is a terminal emulator (the visual window software you open), while Oh My Zsh is a shell configuration framework (the code that runs inside that window). Because they serve different roles, they are not mutually exclusive—you actually use them together rather than picking one over the other. Understanding the Components
To clear up the confusion, it helps to look at how a command-line interface is structured:
The Terminal Emulator (e.g., Pretty Good Terminal, iTerm2, Alacritty): This is the GUI application. It handles the window, window splitting, tabs, fonts, colors, and GPU acceleration.
The Shell (e.g., Zsh, Bash): This is the underlying text-based program that processes your commands and runs scripts.
The Shell Framework (e.g., Oh My Zsh): This is an optional package of themes, helpers, and plugins that sits on top of your shell to give you auto-completion, git indicators, and shortcuts. Direct Comparison
Because you need both a window and a shell environment, here is how their features stack up in their respective roles:
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