aria_pack (1) - generate compressed, read-only Aria tables
AutoLoader (3pm) - load subroutines only on demand
doveadm-altmove (1) - Move matching mails to the alternative storage (dbox-o...
git-shell (1) - Restricted login shell for Git-only SSH access
grub2-reboot (8) - Set the default boot menu entry for the next boot only.
myisampack (1) - generate compressed, read-only MyISAM tables
pam_rootok (8) - Gain only root access
pam_wheel (8) - Only permit root access to members of group wheel
readonly (1p) - set the readonly attribute for variables
SelfLoader (3pm) - load functions only on demand
Thread (3pm) - Manipulate threads in Perl (for old code only)