Zprofiler is a System Utilities software developed by Igor Zenkov. After our trial and test, the software is proved to be official, secure and free. Here is the official description for Zprofiler:
The freeware Zprofiler was written by Antonie Baars. As original author he maintained it till version 2.2 (May 24, 1998). I am using it since 1999. It is one of the best programs I ever came across. It works great, but some code needed to be updated for a new fast processors, like CPU calibrator and a like. I have made changes it required for my own use, and decided to make them available for developer community the same way as original: free and with full source code. you can free download Zprofiler 2.4 now.