SerenityOS and Ladybird are extremely impressive. Andreas comes across as very likeable and the community he's built seems cool.
There's a pervasive idea in the programmer community that it's impossible to make a modern web browser unless you're a top 10 tech corporation. I love that they're challenging that and showing that all it takes is a handful of volunteers with good programming chops and a bunch of elbow grease.
A worrying number of people in engineering don't seem to think software is worthwhile unless you can expect to compete for majority market share with the incumbents. If "hacker" is to be taken as a title of honour, I think it belongs to the ones who make things without expecting to take over the world.
And the project has seemingly helped Andreas stay sober, which is pretty heartwarming.