For me, Andreas Kling and his work on the SerenityOS and Ladybird browser is enjoyable to watch. I recommend watching the JIT-series, Jakt-series (his and JT’s programming language they created). Actually all the series on the channel are great 😄 Also JT’s videos on Nushell and his series on the NES-emulator written with Jakt are good.

https://www.youtube.com/@awesomekling
https://www.youtube.com/@SystemsWithJT

Vikunja is one option. Selfhosted, open source and Trello-like.

Jeez, I had forgotten all about LORD! Thanks for bringing back such good memories! I used to play it all the time back in the good ol’ days.