TL:DR; Lock My PC Free Edition is a good and free alternative to standard Win+L Windows lock.
Lock My PC Free Edition is a good and free alternative to standard Win+L Windows lock. Use it every time when you leave your computer unattended.
Lock USB password-protects your USB and external drives in seconds and is the only product that keeps them locked on all operating systems including Windows/Mac/Linux and file systems like FAT32/NTFS/exFAT.
USB Log & Lock allows you to control operations with USB devices on computers connected to the local area network of an organization or enterprise. With USB Log & Lock, you can forbid USB devices with the help of flexibly customizable rules.
Spy all PC activities - keystrokes, screenshots, websites visited, windows opened, applications run, MSN Messenger 6.x-7.x, ICQ 5.x, AOL IM, Yahoo! Messenger 6.x-7.x, Windows Messenger 5.x, clipboard activaties, and passwords...