Christophe Jorssen
Thermodynamic calculations and diagrams in LuaTeX via the CoolProp shared library.
Collision-aware automatic labels for PGFPlots curves.
PSTricks package for drawing electric circuits.
Using PSTricks plotting capacities with infix expressions rather than RPN.
Draw objects for Chemistry laboratories.
Enhancement of PostScript math operators to use with PSTricks.
Oscgons with PSTricks.