Website of Linux distros available for the Windows Subsystem for Linux (WSL), including Ubuntu, openSUSE Leap 42, Debian GNU/Linux, and Kali Linux.

However, these distros very often lack development tools and contain unnecessary packages, for instance systemd. WLinux is a new, open source Linux distribution dependent upon Debian stable which was specially optimized for WSL.

Having to do with open-source software startup Whitewater Foundry, WLinux has got a number of WSL-specific enhancements enabled automatically, with additional features planned into the future.

Features include:

A fast Linux terminal and development environment for developers and pro-users built on Windows Subsystem for Linux (WSL) on Windows 10.
Out-of-the-box support for the majority of Linux graphical apps with no need to configure display or libGL settings. Note: Needs Windows-based X client, which includes X410.
Popular development tools, including zsh shell, git, neovim, and python 3.7 pre-installed. Additional packages can be easily installed via apt package management system (e.g. $ sudo apt install nodejs) from your expansive Debian repos and third-party Debian-compatible repos. The Debian backports and testing repos are often pre-configured.
Pre-installed with wslu, a group of useful open-source utilities for interacting between WSL and Windows 10.
A small amount of unnecessary packages, like the systemd, have been removed to increase stability and security.
Additional scripts to simply install what follows popular applications:
Google Chrome $ sudo /opt/installchrome.sh
Visual Studio Code $ sudo /opt/installcode.sh
pip3 for python (Testing)
fzf (Testing)
Think another app must be here? File an attribute request and state your case.
New features are actively added dependent upon community interest, including paid bug and show bounties.
WLinux offers faster patching than any upstream Linux distro for WSL-specific bugs.

There's the Wiki here, and WLinux obtainable directly from the Microsoft Store. It isn't free however -- the distro may be priced at $19.99, but to a limited time you may get it for $9.99.

If you cannot want to pay, you, yourself are free to build WLinux on the source yourself or fork it for a own project.