The logos can be seen at
they were all made using The Gimp.
I tried to make simple logos but with a modern design.
They look like they were made using a construction set.
Square shapes represent the windows managed by fvwm.
This first one is basic. It introduces the logo.
Some color variations and shading effects.
In next logo, F could mean Floating. It is evokating the sea.
The same one with a background representing water on which the
logo is floating.