I am the project lead and main developer of the Eclipse Mosquitto project. I also maintain packages for Ubuntu, Debian, Raspbian, Homebrew, Docker, Windows, and Snaps. Please note that I am employed part time by Cedalo GmbH to work on Mosquitto. If you wish to pay for Mosquitto support you should contact cedalo.com rather than go through the sponsors scheme.

I have written a few utilities that may be of interest to people involved in chip design: gds2pov, png2gds, and some others.

I wrote a tool for valgrind that simulates memory and/or system call failures. It isn't part of the upstream project, but is available in the valgrind snap package, which I maintain. The tool is just a bit unwieldy to use, but I have found a few bugs with it.

Finally, I can't ignore my vanity project, ralcalc, which is a very simple calculator that works on the command line, uses SI prefixes, and is installed as the = command so it's really easy to use. I love it and use it most days. I only know of two other people using it, and that's fine.