A Red Hat Enterprise Linux subscription is a commercial service delivered by Red Hat. The subscription      includes:                                                     

1. Delivery of software that has been tested and certified for integration with hardware and software providers;
2. Software updates and upgrades through Red Hat Network;                             
3. Telephone and/or web support;                    
4. intellectual property protections in the event of infringement claims.                                

While our license agreement doesn’t restrict your ability to copy and distribute the software in your organization, you are required by the enterprise agreement to purchase a subscription for each system consistent with its function and service level.                       

If you determine that you don’t need the benefits that come with a tested and certified enterprise-grade operating system, along with the support, software maintenance, and intellectual property assurances that a Red Hat subscription provides, there are community versions of Linux available, including Fedora.