Been a happy Juggler since I first saw it on here. I really think it is much more approachable for people who are intimidated/overwhelmed by the terminal and just want an all in one solution that is intuitive, pre-configured, and also works great. I really like the "auto approve" strategy given lots of people have no idea when something like a `sed` is going to write or read.
However, I likely wouldnt suggest Pi (or even opencode) to someone who I would also suggest Juggler. They just dont feel like the same type of user, in my opinion.
I do think you could take a look at ChatWise, Kelivo, Rikkahub, Jan, and Waku if you wanted to see who your real competitors are. Again, in my opinion.
Those are full standalone GUIs with workspaces and built in tools that help you get things done without requiring any terminal commands.