Dave W. Plummer has developed a full-feature-parity version of Notepad called RetroPad, written in x86 assembly language, which is 2,749 bytes in size. RetroPad replicates the functionality of the original Notepad from Windows XP and is available on Plummer's GitHub under the Apache 2.0 license. Initially, he managed to reduce RetroPad to 2,686 bytes before adding features like keyboard shortcuts, which increased the size to 2,794 bytes. The original Notepad from Windows XP was approximately 65KB, while later versions of Notepad in Windows 7 to 10 reached sizes of around 190KB to 200KB.