Mainstream release:
Redhat series appeared in an early version, but it seems that business means more and more strong, many people say 7 bad use, many people say RHCE is chicken. The personal feel of the 6.x version is still very useful. Fedora has not been used for many years. The next project is preparing to use Oracle Linux to build a RAC cluster on vsphere.
Derivative version
Centos
RHEL
Fedora
Oracle Linux
The Debian family's favorite release, compact and stable, one version kills desktop and server domains. The complete software repository is the favorite.
Derivative version
Ubuntu
Mint
Knoppix
The main line of the Slackware series seems to be declining, and SuSE is growing. Yast2 is quite powerful and quite handy. Production environment more than 10 sles, duly, stability overwhelming. It is said that there are many people in Europe with SuSE.
Derivative version
OpenSUSE
Sles
Personal:
Production of SLES one SP4
Operation and maintenance support Centos 6.x
Individuals like Debian, OMV, Proxmox, Tiny Core, OpenWRT
Latest version of Linux release timeline 12.10
Http://futurist.se/gldt/wp-content/uploads/12.10/gldt1210.png
Introduction to Linux Distributions