Since at least 2015, dealers have marketed digital media players, often running the Android operating system and branded as being "fully-loaded", that are promoted as offering free streaming access to copyrighted media content, including films and television programs, as well as live feeds of television channels. These players are commonly bundled with the open source media player software Kodi, which is in turn pre-loaded with plug-ins enabling access to services streaming this content without the permission of their respective copyright holders. These "fully-loaded" set-top boxes are often sold through online marketplaces such as Amazon.com and eBay, as well as local retailers. The spread of these players has been attributed to their ease of use (with user experiences similar to legal subscription services such as Netflix) and low cost, as well as the content that is offered from the services pre-installed on the boxes.