Alexandre Macé

Footprint

️ ClimateLab

Grasp the orders of magnitude of your carbon footprint: an activity comparator built on Ademe's data and a footprint simulator with ranked climate actions.

Interactive map crossing the 2026 French municipal elections (50,000+ candidates across 34,000 communes) with climate projections from Météo France and the IPCC.

Independent, open-access and rigorous media on the climate emergency.

Interactive chronological timelines to explore history, arts, sciences and society: 30 subjects with guided paths and quizzes.

Bon Pote's library of climate charts and data visualizations.

Mix

️ ClimateLab

A sandbox for France's 2050 electricity mix, bounded by the industrial limits RTE describes: every missing low-carbon TWh keeps fossil fuels burning.

Transitions

️ ClimateLab

Exploring preconceived ideas about the transition to carbon neutrality

Coding guidelines for Symfony and React projects, plus a set of Claude Code skills that enforce them.

Thermomètre

️ ClimateLab

Causes, consequences and solutions of climate change: searchable IPCC AR6 figures alongside live Our World in Data charts.

An educational tool that teaches you to refute with sources the classic climate inaction arguments.

Le climat en 10 minutes

️ ClimateLab

Understand human responsibility, the consequences and the solutions of climate change in 10 minutes.

Educational dashboard about French public finances: revenues, spending, debt, and a net salary breakdown simulator.

A collection of digital tools for the climate, to grasp the orders of magnitude behind carbon neutrality.

One of my first projects, from 2019, brought back to life. Move a single slider and the world map redraws itself, from incomes as they are to a world where everyone earns the average. The map, the data bindings and the colour system are done from scratch.

A personal design system published as a shadcn registry: theme tokens and React Aria components pulled into every project with one command.

A personal museum of taste: iconic pieces of design (watches, chairs, cars, interiors) explored chronologically and ranked through duels.