Any software that can take screenshots when a contact form is filled out and/or submitted?

Takes a screenshot of what? The browser window? The whole computer? You can't just take a screenshot of someone's computer from a website, the browser security settings won't allow you. Taking a screenshot of what is inside the browser window may be technically possible, but very difficult.

Unless you're talking about using a browser plugin of some sort, you can't actually do it from their computer. You could, however, make a copy of the exact HTML that is present once the form is submitted, and pass this to the server. Then, make a mirror copy of the page, and use a server driven browser (such as Selenium Webdriver) to take a screenshot of that mirror page. That's the only practical way I can think of doing it, other than a browser extension (plugin). You're going to need a specialized developer, no matter what.

I do my best to figure out, why would someone need anything like that... The sole purpose I can think of that you want to actually "spy" on people's email address and their interest (since when they fill out a contact form they usually have to enter email + what they want). While I understand the benefit of having these information, I can tell that they are more simple way of doing that...

However, what you want is VERY complicated... not only because you will not have the authorization to do this on somebody's computer, but also because I assume you don't want the screenshot with the empty form, but when that is filled.

Anyway, I think that we all would appreciate if you would share us (or PM) what exactly the purpose is?

ActiveTrak uses client-based software running in the background. If you want to track your employee's computer use, why don't you just use ActiveTrak - it's free.

On the other hand, if you're trying to grab screenshots of someone's machine who has no employee relationship with you - i.e., getting shots of a visitor to your website's screen, then you probably ought to think real hard as I'm relatively certain that would run afoul of more than one wiretapping or eavesdropping laws.

Not to mention that if someone found out, they'd probably send Guido around with a baseball bat.

It is possible only if the form is working with JAVA. I have never tried to do this but it could be interesting. however, this is like violating privacy don't you think?

Most of the people here didn't understand my question. I am NOT trying to spy on people visiting a certain website. Instead, I am trying to monitor my employee WITH HIS AUTHORIZATION and KNOWLEDGE. I want to make sure he fills out contact forms as that is the most important task I have hired him for.

Web Applications can not access to the OS, it's simply forbidden.
you can use others methods instead.

Perhaps I'm still not understanding the question, but why not just monitor the form itself in PHP? All you would need to do is keep track of the form's input fields. Either they're true (completed) or false (empty).

Better yet, you could simply disallow submission of the form in question until all fields are completed. This doesn't validate the input, so false submissions could be made with junk entries entered into the forms, but is this really likely to happen anyway? How trustworthy is the employee?

Silly question, since I think the answer will be "no", but are you a developer? If so, this should be an easy problem to fix. If not, you'll need to find someone with knowledge of HTML and PHP, such as a junior PHP developer. This isn't a job for a professional or higher level developer.

Anyway, checking the form fields is a much more efficient way of handling this problem over the long-winded, convoluted method you describe and the CPU resources used will be next to none.