It was custom SW created by construction company: things like quotations, warehouse management, controlling, some accounting integrations, time tracking and what not. At the end it was sold to about 60 other companies. It was about 30 years old when the development stopped: it was slowly being eaten by more modern software, but I am sure it is still used somewhere. I was single dev working on it since my day 1.
Nice, this is what I’ve been working towards and reaping the benefits of for the last couple of years. Getting my ski days in the winter and foil surfing time in the summer. I love having low hours, with the few hours I’m spending building things being very intentional and feeling more rewarding.