TeXCAD

TeXCAD is a program for drawing or retouching pictures in LaTeX. The features of environment are quite limited, but it presents the great advantage of requiring no add-on and being displayed on all devices.


You also enjoy the same fonts, macros, formulas as elsewhere in your LaTeX document.
In addition, TeXCAD extends the original {picture} capabilities, even without any obligatory LaTeX package, class or style sheet.