The most recent version of .NET Core, 2.0, comes with a number of improvements. .NET Core 2.0 is the fastest version of all times and can run on multiple platforms including various Linux distros, macOS (operating system), and Windows.
Distros stands for Linux distribution (often abbreviated as distro), and it is an operating system made from a software collection, which is based upon the Linux kernel and, often, a package management system.