piggyA little clarity for your money.
From Google Sheets to a clearer view of budgets, cash forecasts, and investments. A useful tool born from my own questions.
Meet PiggyI’m Aurélien, a software engineer at Docker and the creator of Piggy. I write about technology, money, and the world around us.

There’s a whole world beyond the keyboard.
01 / MAKING THINGS
piggyFrom Google Sheets to a clearer view of budgets, cash forecasts, and investments. A useful tool born from my own questions.
Meet Piggy
AUDIO EN FRANÇAISTechnology books and the questions they raise about innovation, work, and society. With a little personal reading between the lines.
Explore the podcastPERSONAL FINANCE · INTERACTIVE CALCULATOR
A home purchase deserves more than a rule of thumb. I built this calculator to compare the long-term financial picture of renting and buying.
Adjust the home price, mortgage, rent, and investment assumptions to explore different scenarios.
English-language tool
02 / THINKING OUT LOUD
A practical case for dependencies that make your Go code easier to test.
What happens when a programmer starts asking better questions about money.
A few dice, a shared story, and a very good reason to gather around a table.
Curiosity, experimentation, and optimism as a skill for building new things. An English adaptation of Revues de Code.
Buying versus renting, the costs beyond a mortgage, and questioning the idea that ownership is always the better investment.
Moving beyond the bank balance as a spending guide, and building a more deliberate relationship with money.
03 / THE REST OF THE WORLD
Not everything needs to be productive. Some things are just worth doing.
01 / MusicA guitar, a little patience, and the pleasure of getting a little better.
Let’s talk music
02 / Outdoors26 framesGetting outside, following a trail, and paying a little more attention.
Explore the photo albumA few dice, good company, and a story none of us knows the ending to.
Adventure awaits