Cédric Pierquet
The contributor Cédric Pierquet appears to be present as the CTAN community member cpierquet.
Insert menus/items for classic calculators
Fontspec support for the OpenType font CascadiaMono
A circular glyphs alphabet
Insert colored belts in documents (to present skills, for example)
Manipulate numeral comma separated lists
French version of colour definitions from xcolor
Macros to create simple tcolorbox with some customizations
Custom environments (MCQ, list with picked items, ...)
Vectorial coins and banknotes in euro, with stacking option
Commands for CAS-like windows (Xcas or Geogebra) in TikZ
Highlight formulas or paragraphs
Insert inline images, with automatic size/positioning
Insert multilingual placeholder text
Package (or only fontspec config files) support for the OpenType font JetBrains
Macros to insert playing cards
Insert Licence Etalab 2.0 logo
Change small texts to remove the depth of the letters
Use openmoji through LaTeX commands
Some geometric tools, with TikZ
Commands to display French road signs (vector graphics)
Commands to work with Gurvan Paper
Insert “chronometer pictograms” with a duration
Work with PixelArts, with TikZ
A LaTeX package for displaying Post-it notes
A LaTeX package for French maths teachers in high school
Commands (with TikZ) to work with French “BTS SIO” maths themes
pynotebook presents (raw, Markdown or Python) codes (and execution with LuaLaTeX) as in a Jupyter Notebook
Create quizzes like in TV shows
Creating random integer number lists, with repeating and sorting options
Work on linear systems using xint or pyluatex
Commands for Scrabble boards
Insert 'terminal' or 'context menu' or 'viewers' like in an OS
Work with SymPy and PyLuaTeX
Use tablerIcons through LaTeX commands
Tangram puzzles, with TikZ
Horizontal banners in a puzzle style
Work with some 2D TikZ commands (French)
Work with some 3D figures
Simple decoration fonts, made with TikZ, for short texts
Create triminos, made with TikZ
Calculates and displays arithmetic operations with durations
Draw Bernoulli trees with TikZ
A LaTeX package with tools for graph plotting (and TikZ)
Insert Trivial Pursuit board game
Vectorial logos (GeoGebra, Emacs, Scratch, ...) with ‘inline’ support
Create wordle grids
Write on grid lines
Classic regressions, with xint