a GNU package containing software for programmers and technical users. Its centerpiece is libplot, a powerful C/C++ function library for exporting 2-D vector graphics in many file formats, both vector and raster. It can also do vector graphics animations.
libplot is device-independent in the sense that its API (application programming interface) does not depend on the type of graphics file to be exported.
Besides libplot, the package contains command-line programs for plotting scientific data. Many of them use libplot to export graphics.