I am new on this forum
I am doing some research I will appreciate if some one can let me know that
Which programming language is mostly used for software development especially for commercial purpose.
I would have to agree with that. What ever the company wants to have the program written in is the language that will be used. I have VB.net, C++, Java, C# and there are more out there. So there really is not one main language that is used. Sometimes it will be a combination of languages. Just whatever the business wants.