Neoload:- 1) Developed by a French company named as Netosys and it was written in JAVA. It is available in two different languages; English and French. 2) Used for measuring and analyzing the performance of the website. 3) Compatible to Linux, Solaris, and windows. 4) NeoLoad to be the easiest tool for getting the job done. Windows version download link - http://www.neotys.com/documents/download/neoload/v3.2/loadGenerator_windows_3_2_7.exe Load Runner:- 1) This is a HP product which can be used as a performance testing tool. 2) One of the key attractive features of this testing tool is that, it can create and handle thousands of users at the same time. LoadRunner comprises of different tools; namely, Virtual User Generator, Controller, Load Generator and Analysis. 3) Microsoft Windows and Linux are the favourable OS for this measuring tool.