tray hide

Use a short-key combination to hide and restore one or all running programs.

Automatically hide a window's buttons and other controls.

Easy way to hide/show all apps from the Dock

Lock and hide any folder from all other users and programs. in a second

Anonymity Shield - hide IP

Password protect HTML pages, encrypt website, hide html source code.

Lock and hide your files, folders and drives to deny access, remove, deletion.

Show and Hide images in Internet Explorer

Plancoin allows you to hide selected windows in one keypress

CryptArchiver Encryption Software - Hide & Encrypt Important Files and Folders.