Projects

Personal projects and SaaS products I've built.

Showing7of 7 projects

Jun 19, 2026SaaS
Slicekit: A Full-Stack .NET + React SaaS Template You Own
A production-grade SaaS template that ships the boring 80% already built: an event-driven .NET 10 API (vertical slices, DDD, CQRS, messaging) paired with a typed React 19 SPA, plus an Astro marketing site. Passkeys, TOTP, OAuth, granular permissions, a finished admin panel, a hash-chained audit trail, full observability and CI included. Built because I kept rebuilding the same foundation on every project, and sold once under a commercial license so you own the code.
Jun 08, 2026Personal
Geldhoek: Privacy-First Calculators for Dutch Money Questions
A free, privacy-first suite of Dutch financial calculators in one place: net salary, maximum mortgage, allowances, savings, and box 3. Every calculation runs client-side, with privacy-friendly analytics that only shows statistics and never your inputs, built on a single source of truth for fiscal figures that is verified each year against official sources.
Jan 16, 2026Personal
Garen Collectie: A Thread Inventory App for My Mother
An Android app that helps my mother keep track of her Gütermann sewing thread collection. It pairs a full catalogue of all 400 thread colours, scraped from a Dutch haberdashery, with a personal inventory so she always knows which colours she already owns before buying more.
Dec 14, 2025SaaS
StaticForm: Form Backend With Spam Filtering and Full Observability
A SaaS platform that turns any HTML form into a reliable submission pipeline, with 10+ spam checks, complete action logging, failure alerts, and a flat monthly fee that never charges per submission. Built originally to stop rebuilding the same form backend for every client project; now used by developers and agencies managing forms across multiple sites.
Nov 15, 2025Personal
P1 Meter Monitor: Automated Energy Tracking and Reporting
A Dockerized Python service that collects readings from a Dutch P1 smart meter, stores them in a QuestDB time-series database, and emails periodic consumption reports including solar export tracking and month-over-month comparisons.
Jun 06, 2025Personal
TriviJava: Building a Quiz App with Java
A simple quiz application built with Java Spring Boot, fetching trivia questions from an external API and securely processing answers without using a database.
Nov 04, 2024Personal
SecShare: an open-source secret sharing tool
A project for a client who wanted to share sensitive information