rapidyaml

Parses YAML at ~150MB/s and JSON at ~450MB/s, significantly outperforming alternatives like yaml-cpp, as detailed in benchmark comparisons in the README.

Uses string views into the source buffer, eliminating unnecessary string duplications and reducing memory overhead, which is ideal for performance-critical applications.

Available as a single header file or CMake library, with support for custom memory allocators and error handlers, allowing fine-grained control in diverse environments.

Compiles with Visual Studio, clang++, g++, and Intel Compiler, and runs on multiple architectures including ARM, RISC-V, and WebAssembly, ensuring broad usability.