Zed, a high-performance, multiplayer code editor written in Rust is now open source

Off-Topic
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https://zed.dev/blog/zed-is-now-open-source
At the moment, it is macOS only, but Linux support is in the works.
Hackers news thread:

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Looks like it uses a UI framework that doesn’t exist in Haiku-land just yet.

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Specifically it uses a custom UI framework that only runs on macOS (and requires Metal, it appears), at present.