rewrite

Bun, the JavaScript runtime and package manager, has merged a rewrite of its core from Zig to Rust, potentially improving performance and maintainability.

The Bun JavaScript runtime and toolkit has been rewritten in Rust, marking a major change from its original Zig implementation.

Developer reflects that repeatedly rewriting a terminal tool may have paid off.

NearlyFreeSpeech.NET rewrote their production C++ frontend infrastructure (nfsncore) in Rust, a critical system that handles routing, caching, and access control for all incoming requests. The migration was motivated by Rust's safety guarantees, performance, ecosystem strength, and the aging C++ codebase's limitations.