Both of these programes are very good, i have used them many times.
The Belarc Advisor builds a detailed profile of your installed software and hardware, network inventory, missing Microsoft hotfixes, anti-virus status, security benchmarks, and displays the results in your Web browser. All of your PC profile information is kept private on your PC and is not sent to any web server.
Accelerate the whole system with fast and efficient disk defragment.
It is known that disk fragment has been a primary cause of slow and unstable PC performance.
Smart Defrag 2 is a FREE tool that provides extremely fast and efficient defragmentation to your hard drives intelligently for faster file loading and high disk performance.
Smart Defrag 2 works automatically and quietly in the background on your PC, keeping your hard disk running at its top speed. This defragmenter is 100% safe and clean with no adware, spyware, or viruses.