Although I love using them but I always feel like they could be a lot more than what Claude can currently offer. So I built Mocca(https://github.com/valehelle/mocca-hub). It's an app where the Plugin takes center stage.
Mocca has marketplace where you can discover existing plugin and install it. Each plugin has it's own tab and file directory.
Another cool thing is Mocca has a feature called Canvas. Canvas is basically a mini browser in the app that allows the agent to be more expressive in the respond rather than relying on markdown on chat. What makes Canvas cool is that you can actually tell the agent to create a mini app and it works using existing plugin.
For example I can install coding-dj plugin and ask it to create a media player according to my mood, weather and day of time. The agent will simply know to create a mini app inside the canvas with play , pause , next button.
If you are interested to know more you can visit https://github.com/valehelle/mocca-hub . It's open source.