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An asynchronous runtime for writing applications and services. Supports io_uring, epoll, kqueue, and poll for I/O.

libxev is a cross-platform, high-performance event loop that provides abstractions for non-blocking IO, timers, events, and more and works on Linux (io_uring or epoll), macOS (kqueue), and Wasm + WASI. Available as both a Zig and C API.