sysctlview 2.0 is out!
The sysctl() system call can get or set the state of the system, the FreeBSD kernel exposes the parameters for sysctl() as objects of a Management information Base (MIB).
sysctlview is a graphical sysctl MIB explorer, it shows the properties and the value of an object, the new version 2 allows to set its value, too.
To install the port deskutils/sysctlview:
# cd /usr/ports/deskutils/sysctlview/ && make install clean
To add the package:
# pkg install sysctlview