Aiseesoft FoneEraser is the most powerful security tool to preserve your privacy through erasing sensitive data or all other data on the iPhone/iPod/iPad. You can select the erasing level and remove the data from your iPhone and iPad simultaneously.
Spytector is the ultimate invisible and undetectable keylogger (keystroke logger) that completely meets your PC monitoring and surveillance requirements. Spytector keylogger is undetectable even for advanced users! Official website: www.spytector.com
Aobo Keylogger for Mac Standard is an invisible keylogger for Mac OS X that secretly logs keystrokes, website history, IM chat conversation, IP address and captures screenshots and more and transfers log reports via Email or FTP for remote check.
iKeyMonitor Android Spy is an invisible & free Android keylogger that records keystrokes (including passwords), in/out calls, SMS, WhatsApp messages, GPS locations and website history. It also takes screenshots and send logs to appointed email box.