The invention of digital media plus Internet is changing our lifestyle drastically. Together they make it possible for numerous service providers to offer their digital media on the web and to sell them to end-clients and reach out to the audience efficiently. Due to this, clients can able to shop, read, watch movies, play online multiplayer games and even watch live matches or TV content. Digital Rights Management (DRM) is an anti piracy system for protecting the interests of the content developers in growing era of digital content and demands for digitalization of contents. DRM can be classified into two models un-tethered and tethered, these model focuses on management of payment and usage rights. This paper analyzes and compares these two models which will be helpful in further research. © 2016, International Journal of Pharmacy and Technology. All rights reserved.