Skencil, formerly called Sketch, is a free software vector graphics editor, released under the GNU Lesser General Public License. Its first public version, Sketch 0.5.0, was released on October 31, 1998.
As claimed on its website, "Skencil is implemented almost completely in Python, a very high-level, object oriented, interpreted language, with the rest written in C for speed."
The software is now in version 0.6.17. It has versions compatible with Linux on the i386, DEC Alpha, m68k, PowerPC and SPARC architectures, with FreeBSD, with Solaris, with IRIX64 6.4, and with AIX.
Developers are currently working on port to GTK+, a multiple document interface, and multi-font, fully integrated multiline text. 
The project has a friendly fork, sK1, improved by CMYK colorspace support, Cairo based renderer, color management and CDR files importer.