Having messed around with electronics and computers for decades, these days I tend to use GitHub for keeping track of my work.
Projects span from various home automation tools (monitoring 3-phase energy meters, extracting sensor data from Verisure security systems, ...) to a bunch of different add-on tools for the Qlik Sense business intelligence platform.
Most my work when it comes to Qlik goes into the Butler family of open source tools, more info at Ptarmigan Labs GitHub.
Ptarmigan Labs is where I work - a one-person consulting company offering expert services around everything Qlik.