Agar-VG is a simple 2D vector graphics library included in the Agar distribution. It allows developers to specify vector drawings consisting of elements such as lines, polygons, arcs, text and user-interface controls. Linear transformations can be applied to sketch entities.

The library also implements a visualization widget and a "tool" system to faciliate user interface design. Both framebuffer and OpenGL rendering modes are supported.

Agar-VG is best suited for use in applications where the vector drawings are composed of symbols and user-interface controls. For example, the graphical circuit editor in Agar-EDA is based on this library.

For applications where the vector drawings are themselves accurate representations of dimensioned entities, such as technical drawings and sketches in sketch-based CAD applications, the SK library in FreeSG is a much better option, since it supports dimensions and solving of geometric constraint systems.