ratpoison

# pkg_add ratpoison

focus follows mouse

The ratpoison package in openbsd comes with a variety of plugins in /usr/local/share/ratpoison. Mostly shell scripts. sloppy.c must be compiled.

clang -I /usr/X11R6/include -L/usr/X11R6/lib -lX11 /usr/local/share/ratpoison/sloppy.c -o ~/bin/rp_sloppy

In ~/.ratpoisonrc and restart:

exec ~/bin/rp_sloppy