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.
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...
Cyclope Internet Filtering Proxy monitors the entire Internet traffic and blocks the access to websites and files according to the chosen filter. The Internet Filter allows to specify URL, keywords and file types rules.
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.