Talking about Linux Distribution these three are quite famous for maintaining the server and security perspectives. I don't mean to say there are only these three distributions for servers and network security, I would absolutely be wrong. In that case Slackware, Arch, Black Arch, Kali, Bodhi are some name which shouldn't be missed. I agree there are even more. But being interrelated with each other, people generally get confused about following three Linux Distributions:
They get confused regarding following points:
- Do they belong to same company?
- As Redhat is available as a commercial version do other distributions cost money as well?
- Who maintains them?
- How often their stable versions are released?
I was also little unclear previously, so I did a little study about these three distribution and went through wikipedia. Being convinced myself I draw this diagram listing their features in order top to button.
I wish this will somehow help.