Jean-François Burnol
Extends ε-TeX’s \numexpr...\relax construct to big integers.
A macro for centering lines.
Fix color problems with the package “framed”.
Completely customisable TOCs.
filecontents + macro + verbatim.
A hyperref aware footnote environment.
Use LGR-encoded fonts in math mode.
Greek letters in math mode from Libertinus or Linux Libertine/Biolinum.
Use the text font in maths mode.
A parser for polynomial expressions.
Logarithms and powers with (almost) 9 digits.
Shape selection for PX fonts Greek letters.
Tagging tables of contents.
Conversion of TeX dimensions to decimals.
Shape selection for TX fonts Greek letters.
Expandable arbitrary precision floating point and integer operations.
Interactive computing sessions (fractions, floating points, polynomials).