PGF/TikZ

PGF is a macro pack­age for cre­at­ing graph­ics. It is plat­form- and for­mat-in­de­pen­dent and works to­gether with the most im­por­tant TeX back­end drivers, in­clud­ing pdf­tex and dvips. It comes with a user-friendly syn­tax layer called TikZ.