When comparing Hammerspoon vs Better Window Manager, the Slant community recommends Hammerspoon for most people. In the question“What are the best power user tools for macOS?” Hammerspoon is ranked 38th while Better Window Manager is ranked 74th. The most important reason people chose Hammerspoon is:
https://github.com/Hammerspoon/hammerspoon/issues They do fix issues that come from the community.
Ranked in these QuestionsQuestion Ranking
Pros
Pro 1512 issues are closed in the download page in GitHub
https://github.com/Hammerspoon/hammerspoon/issues
They do fix issues that come from the community.
Pro Deeply customizable
Hammerspoon's Lua scripting and broad API allows you to perform any action you can imagine on your mac. It hooks into many OS APIs directly and has some high-level APIs to manipulate things like Spotify or iTunes. See the full list here.

Pro Automate actions based on the operating system
Hammerspoon lets you hook into OS level events and trigger any action you can imagine. From setting up a simple keyboard shortcut to launching a complex workflow using multiple apps and scripts.
Pro FinderMinder support
FinderMinder allows you to specify where (position) and what size you want newly opened Finder windows to appear. The default Finder behavior is to remember the last position and size for every window, but this can be frustrating if you already know where you want every window to appear (for example, centered at 800x600). FinderMinder must be running for window reposition and resize to take place.
FinderMinder must continue running in the background for window reposition and resize to take place, so click the "Hide" button to dismiss the preferences and keep FinderMinder running. Simply re-launch FinderMinder to access the preferences again or to quit the app.
Pro Cheap and has a free trial
The app costs just $3 and offers a free trial for testing it out before buying.
Pro Has almost all the features needed in a window manager app
I've tried almost every app on this list. I thought it was amazing how many there were out there by the time I finally stopped experimenting and searching for the one I liked most. I chose Optimal Layout mostly because it was sufficiently extendable and felt lighter to use than the others. There were lighter ones, but those were very limited in their features and customizability.
Pro It's free! Which is fair as it manages only windows for Finder.
The price is right! It comes from a great source of developers who already have window manager apps on this page's list. I am not sure what they plan to do with this app in the future, whether to keep it light and by itself and work in conjunction with their other window managers, or add this feature solely to one of their other fully featured window manager apps.
Cons
Con Has 324 issues on their download page in GitHub
https://github.com/Hammerspoon/hammerspoon/issues
I can not list all the issues.
Con Some knowledge of programming required
Hammerspoon is scripted in the Lua programming language, and some familiarity with programming in general will be needed to use it. Some plugins exist that can be used by adding some files to a specific folder, but this will not give the flexibility that is so key to Hammerspoon
