When comparing ShiftIt vs hyper, the Slant community recommends ShiftIt for most people. In the question“What are the best power user tools for macOS?” ShiftIt is ranked 46th while hyper is ranked 72nd. 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 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.
Pro Cross-platform due to electron browser-based foundation
Although not Windows-friendly. But nobody uses Windows terminal anyway.
Pro Built on electron, supports split panels and plugins
Cons

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.
Con Made with Electron
It uses a considerable amount of resources, compared to other offerings.
Con Not as cross platform as advertised
Most features only work on Mac OS.
Con Incorrect rendering
Terminal window has visual artifacts.
Con No configuration UI; all options must be set via JSON
Con Still maturing as of December 2016
Folks noticed some issues in the 1.0 release cited here.
Con Difficult to find information about it, because of the confusion with hyperterminal
