Features

System Monitoring
Monitor processes, services, Internet connections, CPU usage, disk usage, memory usage, DLLs, drivers, locked files, windows
Terminate processes that can not be terminated via Windows Task Manager
Tray icons for CPU, memory, network, disk, and battery
Temperature of CPU, video card, external USB HDD
Remaining life for SSD drives
Load of a video-card CPU
Download and upload speed, amount of transfered data for network connections
Find locked files and DLL
Log of processes start and stop
Graph of processor, memory and disk activity for each process
Threads, handles, performance counters
Security
Descriptions for 70 000+ startup programs, services and Internet Explorer Extensions
Security analysis of processes, startup programs and Windows services
Startup monitor: alerts on new startups, block undesired startup programs
Check files with 30+ antivirus engines
Startup manager: manage all programs running on startup including services, Internet Explorer toolbars, Scheduler tasks
Save HijackThis log with additional info
Permanently block undesired processes
Show hidden processes
Increase PC performance
Delayed startup: speed up Windows startup process
Limit the CPU usage of processes that eat a lot of CPU
Save changed priority of processes
Save the affinity mask for the processes
Optimize memory usage
Suspend / resume processes and threads, free process memory
Run programs as services on Windows startup before user login
Windows enhancements

Click on title of any application:

List of recently opened folders in "Open"/"Save" dialogs
Minimize windows to system tray and save taskbar space
Quick access to last launched programs and last opened folders in system tray
Misc
Compatible with all popular antivirus, complement antivirus software
Can replace Windows Task Manager
Can run as portable application