In February 2014, the .NET Reference Source licensing terms for an up to date reference implementation were clarified as being available under [[Ms-RSL]].<ref name=hanselman-reference-source-site>{{cite web|url=http://blogs.msdn.com/b/dotnet/archive/2014/02/24/a-new-look-for-net-reference-source.aspx|title=A new look for .NET Reference Source|first=Scott|last=Hanselman|date=24 February 2014|accessdate=11 March 2015}}</ref>
In November 2014, Microsoft published the reference source on [[GithubGitHub]] under the [[MIT License]] as part of the greater effort to develop the .NET Framework using an open source model.<ref name=referencesource-github>{{cite web|title=Microsoft/referencesource|url=https://github.com/Microsoft/referencesource|publisher=GitHub|accessdate=16 November 2014}}</ref><ref name=landwerth-dotnetcore-oss>{{cite web|title=.NET Core is Open Source|url=http://blogs.msdn.com/b/dotnet/archive/2014/11/12/net-core-is-open-source.aspx|website=.NET Framework Blog|publisher=Microsoft |accessdate=30 December 2014|date=12 November 2014|first=Immo|last=Landwerth}}</ref><ref name=icaza-dotnetcore-oss>{{cite web |title=Microsoft Open Sources .NET and Mono |first=Miguel |last=de Icaza|authorlink=Miguel de Icaza|url=http://tirania.org/blog/archive/2014/Nov-12.html|website=Personal blog of Miguel de Icaza|accessdate=16 November 2014}}</ref>
