Hoppa
Invoicing made simple for Dutch freelancers
What it does
Hoppa is invoicing software built for Dutch freelancers and small businesses. Create professional invoices, calculate VAT automatically, track payments, and let clients pay securely through Mollie with iDEAL, cards, or Bancontact.
Simple invoicing software for Dutch ZZP'ers, freelancers and small businesses. Create invoices and offers, manage customers, track payments and keep VAT organised with Hoppa.
Create invoices and offers, manage customers, track payments and keep VAT organised. Built for Dutch ZZP'ers, freelancers and small businesses — not complicated bookkeeping. Add a "Pay Now" button to every invoice. Let clients pay via iDEAL, Credit Card, or Bancontact instantly. Perfectly formatted for the Belastingdienst. Automatic VAT calculations and KVK number tracking built right in. Send beautifully clean, professional invoices that make your business look like a premium agency. From the first draft to the final payment status, Hoppa keeps everything clear and easy to manage. Add your customer, service, VAT and payment terms through one simple guided form. Hi, I'm Themos, the founder…from hoppa.cc
Does the same job
all alternatives →Questions this answers
More commerce this month
the category →

Compare your startup equity grant for free.
Commerce · 26d ago · equitybee.com
Launched alongside, August 2026
the whole month →- TL
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 · 17d ago · simedw.com