For fans of the IceWM X11 window manager, the project kicked off 2026 by releasing IceWM 4.0.
IceWM 4.0 is primarily focused on improvements to its Alt+Tab window switcher, which can now handle larger number of application windows for both the vertical and horizontal modes.
In addition to enhancing the Alt+Tab window switcher, there are BSD fixes, alpha blending and 32-bit RGBA support is now the default, support for high resolution icons in WM_ICON_SIZE, standardization of icon sizes from 16 to 256 px, and a variety of other minor updates and fixes. Plus a variety of language translation updates.
IceWM 4.0 downloads and more details on this lightweight X11 window manager still going strong in 2026 can be found via GitHub.
