For instance, there is a abandoned open source project, I would have liked to see revived, https://www.wickeditor.com/ (a attempt at recreating flash with web technology). Current official state in the repo: outdated dependencies, build process, etc.

I looked into doing it manually, but gave up. Way too much dirty work and me no energy for that.

Then I discovered that claude CLI got good - and told it to do it (with some handholding).

And it did it. Build process modernized. No more outdated dependencies. Then I added some features I missed in the original wick editor. Again, it did it and it works.

A working editor that was abandoned and missed features - now working again with the missing features. With minimal work done from my side (but I did put in work before to understand the source).

I call this a very useful result. There are lots of abandoned half working projects out there. Lots of value to be recovered. Unlike Haskell, Agents are not just busy with building agents, but real tools. Currently I have the agents refactor a old codebase of mine. Lot's of tech dept. Lot's of hacks. Bad documentation. There are features I wanted to implement for ages but never did as I did not wanted to touch that ugly code again. But claude did it. It is almost scary of what they are already capable of.