Projects
Have a browse through our projects — there's bound to be something for you. All free, much of it open source.
True-to-scale plots for teachers, lining up exactly with 5×5 mm graph paper: functions, points, areas, oblique projections, reflections — and one switch that turns the worksheet into the answer sheet.
Word for Windows, macOS & iPad · free · open source
Preview Markdown straight from your terminal — rendered the way GitHub does it, including Mermaid, KaTeX and syntax highlighting. No server, no configuration: as casual as cat.
macOS, Linux & Windows · open source
A deliberately minimal tracker for individual flights: enter the flight number and date, then follow it live on the map on the day you travel — with arrival times in both time zones. No account, everything stays on your device.
iOS & Android · open source
In Bug-A-Ball you roll your way through all sorts of levels and worlds, past some tricky obstacles. Unlock exclusive skins and show everyone on the leaderboard who the pro is.
For iOS & Android — on almost any device.