I'm a huge fan of Raycast, but as a Linux user, I was always disappointed it wasn't available on my main OS. This summer, I decided to just build it myself. This project has the goal of being interoperable with Raycast itself, including a majority of the extensions.
It's built with Tauri and Rust on the backend, with a Svelte frontend. The biggest challenge was getting it to run existing Raycast extensions, which required building a custom React renderer as well as making a custom API.
I also wrote a quick post, which I hope to expand on in the future, about this project. You can find it here: https://byteatatime.dev/posts/recreating-raycast
The project is still very rough, but I'm sharing it now to get any feedback you may have!