Fast, well documented, easy to learn and configure.
Best tiling windows manager on the planet period! If you have multiple monitors, this is WM to have and use.
I was skeptical at first of how well a tiling window manager would work, but decided to give it a try (with a base Debian MATE environment), and it has worked surprisingly well, allowed for every customization that I've needed, and has greatly improved the speed of my workflow. Color me impressed!
It's the best tiling window manager for my needs. Great documentation. Great config file syntax. Great performance.
Our users have written 5 comments and reviews about i3, and it has gotten 65 likes