System Activity Monitor
Activity Monitor 11.5
Monitors activity on the computer to detect viruses and misuse
PRO: Very complete: controls pretty much everything
CON: A client app needs to be installed on each PC you want to control
Vote: 6.3/10 (100 votes)
Platform: Windows
HomeGuard Activity Monitor 9.7.1
Monitor every aspect of the home while away
PRO: Keylogger
CON: no free version
Vote: 9.2/10 (329 votes)
Platform: Windows
Microsoft Process Monitor 2.95
Track all the activity in your Windows file system and registry in this free download
PRO: Many tools to manage system processes
CON: Not for novice users
Vote: 4.2/10 (8 votes)
Platform: Windows
Desktop Activity Recorder 2.00
A security program designed to monitor and record keystrokes and program usage
PRO: Simple to use
CON: Doesn't allow much sound editing
Vote: 6.4/10 (97 votes)
Platform: Windows
System Monitor II 19.8
A program for Windows that monitors a variety of system processes and displays device information
Vote: 5.4/10 (17 votes) Platform: Windows
System Monitor Lite 1.5.2
Most complete and beautiful System Monitor!
Vote: 4.5/5 (41 votes) Platform: Android
MKN TaskExplorer 5.0
Monitors activity online and manages tasks that are completed
PRO: Extended information about each process
CON: Basic documentation
Vote: 6.2/10 (23 votes)
Platform: Windows
OS Monitor 3.5.0.7
OS Monitor is a tool for monitoring your Android system
Vote: 4.5/5 (69 votes) Platform: Android
System Tuner 3.20.8
A system suite to monitor and backup apps and tweak your system and CPU
Vote: 4.5/5 (73 votes) Platform: Android