The Red Hat Enterprise Linux Developer Suite subscription https://www.redhat.com/apps/store/developers/rhel_developer_suite.html is a self-support option for application development. It includes Red Hat Enterprise Linux, High Availability Add-On, Load Balancer Add-On, Resilient Storage Add-On, Scalable File Systems Add-On, High Performance Network Add-On, Extended Update Support Add-On, Smart Management, and Real Time operating system.
Ordinarily, if you wanted Red Hat Enterprise Linux you needed to purchase it, or use CentOS Linux, or revert to Red Hat's non-Enterprise Fedora distribution.
The developer tools are available on a subscription basis, normally for $99, giving developers the enterprise-grade distribution with tools supported for ten years.
You can now get it at no cost, by registering in the Red Hat Developers Program.
Here is what you need to do:
1. Make an account at https://developers.redhat.com/register - this can be very quick to do, as you can register using other online accounts, for instance, your Google account. Note though if you do so you will need to set a password, which ironically, requires you to use the 'reset password' link first. Also, your developer account username will be set according to the email address of the online account you use which, in my opinion, is a bit annoying, so be aware.
2. Log in, and upgrade your account to the developer subscription at https://developers.redhat.com/download-manager/link/1350474
3. Download Red Hat Enterprise Linux and tools from https://access.redhat.com/downloads/content/69/ver=/rhel---7/7.2/x86_64/product-software
Be aware that the Red Hat Developer Program is for development purposes only, which means you cannot run production servers using it.