Software I build when nobody is paying me to.

Email on the Linux desktop is split between heavyweight Electron clients and interfaces that have not moved since 2008. Corvus is an attempt at a third option: a native GTK4 application, written in Rust, built around JMAP rather than IMAP, with any AI assistance running locally on the machine.

A terminal simulation of Estonia's once-only principle on a simplified X-Road infrastructure, written in Scala 3. Four authorities exchange data over their own security servers, with no central data store — and every access is logged where the citizen can see it. Built to make an architecture that is usually explained with slides something you can actually step through.

Our calendar is a patchwork of Roman emperors and papal decrees, and our clocks are carved up by geopolitics. GHS is an open protocol that replaces both: thirteen months of exactly 28 days, a continuous Human Era count, and a single borderless day divided into 1,000 decimal beats. It is a specification with a reference implementation, not a thought experiment.

A documentation site aimed at young adults starting out on their own: practical guides on career, finances, housing and day-to-day life. Built on Astro and Starlight, so the whole thing is Markdown in a repository and the content stays separable from the presentation.

A redesign proposal for the parish of St. Ägidius in Dietfurt an der Altmühl — built, deployed to a preview URL, and not (yet) adopted by the parish. Fully static Astro output with zero hydration, YouTube through youtube-nocookie with stored consent, cookie-free analytics, schema.org/Church JSON-LD. Content lives in Markdown collections, so a service schedule is a text file rather than a support ticket. Published as an open source template for other parishes.