This is just a part of MS larger new open source initiative for legacy systems. ASP.net 5+ projects will be using DNX <a href="https:&#x2F;&#x2F;github.com&#x2F;aspnet&#x2F;Home&#x2F;wiki&#x2F;DNX-utility" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;aspnet&#x2F;Home&#x2F;wiki&#x2F;DNX-utility</a> which is already open sourced.