If you're familiar with Git (the revision-control system), the following are software which I have contributed code to:
As of 21st June 2020, my online Git-related accounts are under the user-name "phtan", at:
As of 12th June 2020, I've just set up a journal, titled "Journal of a part-time technologist".
I assume the viewer of such a journal is familiar enough with Github, to figure out how to read an entry in my journal.
Three entries so far.