Here are some of the projects I've worked on in the past.

Xournal++ is an open source, cross-platform note-taking program implemented in C++ using GTK 3. It is primarily used for taking hand-written notes via a stylus, but it also supports LaTeX, audio recordings, and text annotations. Xournal++ can also be used to annotate PDF files.

I have been one of the primary maintainers of Xournal++ since early 2019: in addition to fixing bugs and implementing new features, I also triage issues, manage the build configuration, and create new releases.