fastXML

A high-performance C++ library for rapid XML parsing and serialization with minimal memory overhead.

FastXML delivers extreme throughput for data-heavy applications by utilizing a non-validating, stream-oriented architecture. It outperforms standard DOM parsers by avoiding unnecessary memory allocations and tree structures: processing gigabytes of XML data in seconds. Developers integrate it via a clean C++ API (or Python bindings) to handle complex schemas in low-latency environments like high-frequency trading or real-time telemetry systems.

https://github.com/fastxml/fastxml