Process Lasso is a unique system process automatic optimizer. Its working principle is dynamically and reasonably adjusting the priority of each process based on its special algorithm, so as to realize the purpose of alleviating burdens on system.
Process Monitor is an advanced Windows OS and application monitoring tool (equivalent of Filemon + Regmon), specially designed for system troubleshooting and malware hunting for experienced users. It's released in the excellent Windows Sysinternals, and offered by Microsoft TechNet, so its accuracy and reliability are needless to say.
If use simple words to generalize System Explorer, AppNee gives that like this: it is the most perfect and complete alternative to the Windows built-in Task Manager. It has more detailed and authoritative system info collecting and displaying functions in expert level, but with fool-readable GUI. It's trusted and award-winning, and completely free for both personal and commercial use!
Daphne is a extension type of process management application, which can completely replace the Windows system built-in Task Manager. It allows user to clearly grasp the CPU, memory, virtual memory usage of each program running on the system, as well as the Process ID, Physical Path and other information.
Autoruns is a very good system startups management tool, not only can manage the boot startups and services, but also can directly control the registry. In addition, Autoruns can directly use Google to make a internet search (right-click/Search Online...), directly control the different system logon users, and save the operation records to a file at any time.