Windows only: Freeware utility Z-Cron replaces the Windows task scheduler with a more robust, cron-like alternative (but with a graphical interface). Z-Cron ships with a long set of useful actions you can automate, like sending an email, copying a folder, deleting files, emptying the trash, and way more, which makes writing batch files to do these things for you effectively obsolete. Z-Cron is a free download for Windows only.