I’m working on one! It’s like the Alby chrome extension, but it’s a desktop app. Very early stage. There aren’t any supported desktop apps that can request event signings yet, but I’m working with chris (npub1ygz…60k2) who is building a desktop app that will be compatible. I’m also planning on building a chrome extension so it will work on the web as well.
https://github.com/nodetec/keystache