Submit portable freeware that you find here. It helps if you include information like description, extraction instruction, Unicode support, whether it writes to the registry, and so on.
KShutdown is a graphical shutdown utility for Linux and Windows. It allows you to turn off, restart, hibernate, sleep or log off the computer, as well as lock the screen, show a custom message or execute a user-defined command at a specified time. It features various time and delay options, command-line support, and notifications.