山田ゆういち

Yamada

known as Yuuichi

Chill by default. Locked in when it counts.

Read the blog See what I work on

Black-and-white anime portrait of Yuuichi: dark hair over his face, one eye glowing between the fingers of a hand marked 2, Φ, 1 and %.

Work

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DZBuild POS

Windows 10, 11 · GPL-3.0 · Free

Point of sale and stock management for Algerian shops. Works offline, prints in Arabic, French and English, and follows Algerian invoicing rules. Free and open source.

dzship

Any language (HTTP) · MIT clients, CC0 data · Free

One HTTP API for 99 Algerian couriers. Create and track cash-on-delivery parcels with Yalidine, ZR Express, Maystro, NOEST and every Ecotrack courier. Free, with no signup and no API key.

Writing

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Oct 31, 2026
Hello, I'm Yuuichi
Yamada, known as Yuuichi. Why this site exists, what I'll write about, and what's coming next: tech, products, and anime.

About

I build what I find interesting. When something grabs me, I hit Ctrl+Alt+Del on everything else and lock in. I stay up until it's done, and I do it right or not at all.