It means a bit of software, or code, that is free to use. You’re free to use, copy, study, change, improve or redistribute the software as you like. WordPress is open source software and was founded upon the GPL (General Public Licence) that you can read more about over at the WordPress site > here The primary point to notice is that any application that is constructed upon WordPress should carry forward the original GPL license. … we feel strongly that plugins and themes are derivative work and thus inherit the GPL license. It does not imply that developers can not charge you to purchase the code they have developed. What it will mean is that once you have purchased that code, you are free to do whatever you like with it. if you distribute copies of such a program, whether gratis or for a fee, you must give the recipients all of the rights that you have. You have to make sure that they, too, receive or can get the source code. And you must show them these terms, so they know their faith. Thus, it is perfectly legal to download the plugins and themes from this website. Get as many as you like and use them in as many jobs as you want. Please note — a Brief disclaimer The principal difference between the programmer is that we don’t provide any technical support at no cost. In this way we can redistribute the things in a fraction of the original price. So, if it’s possible to think you will need continuing technical support for a product, then please think about buying from the developer. Links to every developer are provided on the product pages. We believe we make it absolutely apparent that while the merchandise on GplCrown is the original products — we are not the original authors. We are merely redistributing the software, as it is our right to do so, under the GPL license. However, for the avoidance of any doubt or confusion: Any mention of these companies is purely so that our customers aren’t misled regarding the original supply of the solution and so they have the option whether to buy from us from them. You might also want to see our FAQ page for additional information about GplCrown and the GPL license. If you have any questions, please don’t hesitate to contact us.