Three innovative microkernel projects offer alternatives to Linux kernel development: Managarm (C++ microkernel with Linux binary compatibility), Asterinas (Rust-based framekernel using language features for privilege separation), and Xous (Rust microkernel powering the Precursor security device). These projects demonstrate viable paths forward amid recent tensions in Linux kernel development, including Rust integration conflicts and developer departures from high-profile projects like Asahi Linux and bcachefs.
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