herbstluftwm vs WindowWatcher

herbstluftwm is a manual tiling window manager for the X window system. Each virtual desktop, called a tag, has a tiling layer and a floating layer, allowing windows to occupy split frames or be placed freely. Frames can be divided into further subframes or filled with windows, and keyboard controls move, resize, and focus tiled and floating windows. Configuration runs through herbstclient and can be changed while the manager is running without a restart. Screen space can be divided into virtual monitors that need not match physical displays; monitors share a common pool of tags. The project is licensed under the Simplified BSD License and is listed as free at free. The download page lists packages for Linux distributions and Mac OS X via MacPorts, and confirms operation on Cygwin. The project also offers released source tarballs and links to its current development version. Community help is available through IRC, Reddit, GitHub issues, and a mailing list.

WindowWatcher has no write-up on Specifiction yet; its figures are above.