XAMPP is an easy to install Apache distribution containing MySQL, PHP and Perl. XAMPP is really very easy to install and to use – just download, extract and start.
XAMPP is an acronym, which stand for:
You can also install them separately and configure them. XAMPP puts all this and more together in a single package which makes it easier to deploy it.
Now How to Update XAMPP in Windows without loosing your existing sites and databases.