There are some differences between CentOS and RHEL, but in most cases the two systems are very similar. RHEL comes with paid support, and is a commercial product. CentOS is a free product and doesn't contain any RHEL branding throughout the system. Every version of CentOS is maintained for over 10 years, which is something you won't find with other distributions. However, there are much less features in comparison to other distributions: this makes CentOS the most lightweight distributive. If you're simply looking for a lightweight distribution to host a website or web app, CentOS is a great choice. Control panel for CentOS.