When comparing MoveIt vs ShiftIt, the Slant community recommends ShiftIt for most people. In the question“What is the best window manager for Mac?” ShiftIt is ranked 2nd while MoveIt is ranked 21st. The most important reason people chose ShiftIt is:
ShiftIt is configured through a simple UI where you simply press the hotkeys you wish to map to a certain action.
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Pros
Pro Simple to understand window actions
Pro Can change keybindings easily
...as long as you are good with a text editor and know lua.
Pro Simple code that can be modified to meet your needs
Pro Lua based code and configuration
Code and configuration can be captured in personal dotfiles repo.
Pro Build on hammerspoon
Pro Easy to configure
ShiftIt is configured through a simple UI where you simply press the hotkeys you wish to map to a certain action.
Pro Free
Pro Intuitive
ShiftIt is very straight-forward to use for most frequent usages.
Pro Open source
Pro Configuration can be committed to your personal dotfiles repository
Configuration winds up living in .hammerspoon/init.lua and .hammerspoon/Spoons/ShiftIt.lua. Very easy to track configuration changes.
Cons
Con Must be familiar or willing to learn Lua to customize
Hammerspoon-based applications require knowledge of text editing and the Lua programming language.
Con A little slow
Similar to Spectacle, but it has a few more features, such as being able to pick the size adjustment increments. Spectacle was a little faster, though. Repeated size changes or moves in succession can cause it to wait for it to complete.
Con Imprecise when readjusting sizes
Con Doesn't support moving windows between workspaces
There's no way to move a window to a different workspace with hotkeys in ShiftIt.