Rechner Zentrale
190+ privacy-first calculators for German tax & law
What it does
Deutschland the Land of Sozialversicherungsbeitragsbemessungsgrundlagenverordnung makes dealing with everyday bureaucracy a nightmare. Rechner Zentrale is 190+ free calculators for German tax, salary, benefits, pension and finance — updated for 2026. Runs fully client-side: no signup, no data storage, no ad cookies. German + English. Install as PWA on iOS or as Android app on Google Play.
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- AOAn open-source accounting tool for small companies in Germany2023 · github.com · ▲5
As I couldn't find a proper web based open source tool that could help me with my bookkeeping, I spend a week to built one myself. It's based on laravel and provides revenue, expenses, travel allowance and depreciation sections. Everything is then merged to an annual statement, that can be exported as a pdf and used for tax filing. It's far away from perfect (no tests yet), but I would be happy to hear what you think about it and maybe find someone to join in.
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Compare your startup equity grant for free.
Commerce · 26d ago · equitybee.com
Launched alongside, August 2026
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Life & fun · 10d ago · louisabraham.github.io
- SA
Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…
Life & fun · Aug 2026 · toneyalexander.github.io
I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.
AI · 16d ago · simedw.com