As of October 2019, according to the official website, the app is no longer actively maintained. See https://github.com/eczarny/spectacle#important-note
When I have to use someone else's Mac, I try to use the shortcuts without thinking about it until I remember that it's only installed on my computer. It's simple and makes me more efficient.
Good, simple, configable and it's free!
After some experience with i3wm on Linux I was trying to something which similar features on OS X. Spectacle turned out even better as it not gets in your way and very very simple to remember hot keys and start.
It is an good an well working, free alternative for window tidy. You can manage your window via shortcuts or mouse.The only thing i miss is customize my own window formats.
What I need for managing all the windows i use on Mac when I'm an old Windows user! It's free and open source in difference to Cinch.
You don't have the drag and drop possibilites, but I like keyboard shortcuts better.
Our users have written 5 comments and reviews about Spectacle, and it has gotten 82 likes