When comparing iTerm2 vs Spectacle, the Slant community recommends iTerm2 for most people. In the question“What are the best power user tools for macOS?” iTerm2 is ranked 1st while Spectacle is ranked 31st. The most important reason people chose iTerm2 is:
iTerm has autocomplete features built in. It remembers your past commands and when you are writing something on the terminal, simply pressing `Control-;` it will show you a drop down menu of suggestions from which to choose.
Ranked in these QuestionsQuestion Ranking
Pro Autocomplete is built-in
iTerm has autocomplete features built in. It remembers your past commands and when you are writing something on the terminal, simply pressing
Control-; it will show you a drop down menu of suggestions from which to choose.
Pro Extremely customizable
Other than being able to customize the various shortcuts, iTerm2 also lets you customize the colorscheme, font, transparency, etc.
Pro Fine tuning for fonts
It's possible to choose a font and adjust vertical and horizontal spacing.
Pro Complete out of the box
Unlike most terminal emulators, iTerm2 comes with a pretty complete set of features. It has built-in search, autocompletion, tabbed navigation, Growl support and even a built-in clipboard manager for various API keys and such.
Pro Any key can be mapped to any function
Using the Preferences Menu you can set up hotkeys to map virtually any action you can think of to a single key or a combination of them. This is extremely helpful as it allows you to use shortcuts to edit commands you are typing in the terminal and while most terminal emulators have shortcuts for this sort of thing, few of them let you define your own.
Pro Can immediately open files inside a text editor
You can Ctrl+Click on a file path to open said file in a text editor.
Pro Active maintainers
Issues resolved fast by quality contributors.
Pro Works well with powerline fonts
Pro Supported by many applications as a terminal app selection
If an application has terminal integration, there is high probability it allows iTerm2 to be selected.
Pro Supports mouse actions
Has support for mouse actions like clicking, dragging, selecting, etc.
Pro Can be configured as a drop-down terminal
Can be configured to work as a drop down terminal like Quake.
Pro Completely free and open source
iTerm2 is completely free and open source. It's released under the GPLv2 license.
Pro Works well with tmux
The great mouse and clipboard support that are built-in go really well with tmux.
Pro Split panes
Easy to split panes to either horizontal or vertical sections. Makes it easy to observe multiple console windows.
Pro You only need to type in commands once
iTerm2 can store up to 4M of history of commands you already used. This, coupled with the built-in search features makes it possible to type a command only once and then search for it through the history for subsequent uses.
Pro Cmd+D to split plane vertically
Very handy to use multi-tab.
Pro Works perfect with Oh My Zsh
It's a perfect base to add Oh My Zsh on top of it and enjoy a lot of themes and a really pleasant look and feel.
Pro Cmd+Shift+I to Input all
Wanna SSH your server from multiple tabs, here you go.
Pro Free and open source
Spectacle is licensed under MIT with source code available on GitHub.
Pro Low footprint
Spectacle only uses up 18-19 MB of RAM, which means there is not much overhead by using this app.
Pro Simple hotkeys
Spectacle offers easy-to-remember preset hotkeys.
All windows in Spectacle can be controlled with keyboard shortcuts, so no mouse is needed. This makes for a fast way to control windows.
Pro Great UX
Spectacle is easy to use and configure. It's plug and play.
Pro Multi-monitor support
Con Not quite as fast as Alacritty or Kitty
Comparing these 3 terminals on the same machine/config, iTerm stands out as the slowest of the bunch. The difference may not be noticeable to all users.
Con Doesn't support Snow Leopard 10.6.8
Some people still use Snow Leopard or other 32-bit systems.
Con Doesn't support RTL
Con Impossible to add new functions
While keyboard shortcuts can be changed for the available actions, there is no way to add custom actions which in turn limits the functionality of the app.
Con Breaks on macOS High Sierra / Chrome or Firefox
Doesn't support side by side windows.
Con Limited window sizing capabilities
You can use 1/2 of the screen vertically and horizontally (divide into 4 parts). You can also use the screen in thirds too, but only the left and right third: you can't use the 1/3 in the center. There is no way to do a more granular distribution.
Con Not maintained
The software is free, but no longer seems to be maintained.
Con Doesn't work with any Adobe products
There are some apps like Adobe Reader that do not work with Spectacle. Basically, any app with a heavily customized UI that breaks OS X accessibility will not work correctly under Spectacle.