I build small tools that do one thing and do not ask you to sign up. Around thirty of them are running right now on one server; the index is at alftech.space.

These do their work on your machine. Once the page is open it keeps working with the network off, and no file leaves the tab.

JSON Tools · Regex Tester · Crontab Guru · README Maker · Palette · Prismatic — an Elasticsearch console for when installing Kibana for five queries is too much.

• KidSpace — where to take a child in Bali and Luxembourg. 2,500 places, 2,098 of them mapped from OpenStreetMap.
• CheckCV — seven scores on your CV in a minute: wording, formatting, whether the software that reads it first can parse it.
• Luxembourg net pay — salary, tax class, the declaration and the cross-border rules, each figure next to the article of law it comes from.
• BookKicker — sends you a piece of your book every hour, which turns out to be how a book actually gets finished. 9,181 readers.

LuxFlash for the language, Vivre ensemble for the citizenship test, Letter decoder for the ones from the commune, Luxembourg homes for the listings the portal will not page through.

The Pharos — a twelve-level platformer. AstroQuest — NASA's picture of the day and a star chart. Leveling and Solo Leceling — RPG shells around real exercise.

Most of these are closed source for now; the ones that are open are linked above. Something broken or missing: a@alftech.space. Status of everything.