IceWM is simple and highly configurable. All the settings are
stored as plain text files in the user’s home directory,
making it easy to customize and configure the settings.
Originally based on the look and feel of the NeXTStep interface,
AfterStep provides its users with a consistent, clean, and elegant
desktop that can run on any low end PC. As the same as other
lightweight desktop managers, it is fast, stable, easy to use and
easy to configure."