Sysinternals Troubleshooting Utilities for Windows. Developed by Mark Russinovich
License: Free
TweakNow PowerPack is geared towards individual users looking for an easy-to-use system optimization tool, while Sysinternals Suite is designed for IT professionals needing advanced troubleshooting and monitoring capabilities. The former offers a user-friendly interface and comprehensive optimization tools, whereas the latter provides a robust collection of powerful utilities for deep system analysis.