No. Many Web Browsers for mobile phones and PDAs require you to purchase them. The original Nintendo DS browser had to be purchased on a cartridge. And Opera used to require you to pay for its desktop version, and still requires you to purchase many of it's mobile versions.
Most Web browsers are free (in fact, almost all!). For example, the popular browser Mozilla Firefox is open-source, and can be downloaded free of charge from Mozilla. Other free browsers include Opera, Safari and Google Chrome. There used to be commercial Web browsers - the classic Netscape Navigator had a registered version - but nowadays they're all freely available.
some are not
Yes. Most web browsers are free. But you still have to pay your ISP
Almost all web browsers have a vertical scrollbar on the side of each window.
HTML is important to web browsers as it forms the web pages. The web pages are the ones which run on the browsers.
Are not all browsers full screen if you want them to be?
A website remains the same for all operating systems. All that matters is the web browsers that handles it.
One can find a free web browser off of the Mozilla Firefox website, Google Chrome, or the Opera website. Other web browsers are listed at different websites, you may want to check Wikipedia for more information.
They probably work in popular browsers. There are many web browsers and I guarantee you it doesn't work in at least one of them.
Web Browsers are softwares used for viewing web pages. They can also be used for developing and testing web pages.
no
It allows you to view the web as do most all other browsers.