app4soft
On 31 October 1998, #Sketch 0.5.0, later #Skencil, released by @ber & Bernhard Herzog: https://en.wikipedia.org/wiki/Skencil
On 31 October 2010, revitalized #Skencil 1.0.0 alpha released by #sK1 project team: https://sk1project.net/others/skencil/
New #sK1, an opensource vector graphics editor for DTP with #CMYK support, become a successor of Skencil: https://en.wikipedia.org/wiki/SK1_(program)
