QRCoder-ImageSharp is a simple library, written in C#.NET, which enables you to create QR codes. It was forked from the QRCoder project that is using the System.Drawing assembly.
Because of the System.Drawing assembly does not suport non-Windows plattforms, QRCoder-ImageSharp is using the ImageSharp assembly to support more plattforms.
QRCoder is a project by Raffael Herrmann and was first released in 10/2013. QRCoder-ImageSharp is a project by Joerg Plenert. It's licensed under the MIT license.