*[Cap'n Proto](https://github.com/capnproto/capnproto) - Fast data interchange format and capability-based RPC system. [MIT] [website](https://capnproto.org/)
*[cereal](https://github.com/USCiLab/cereal) - A C++11 library for serialization. [BSD]
*[cista](https://github.com/felixguendling/cista) - A C++17 library for zero-copy high-performance (de-)serialization. [MIT]
*[cppcodec](https://github.com/tplgy/cppcodec) - Header-only C++11 library to encode/decode base64, base32 and hex with consistent, flexible API. [MIT]
*[FastBinaryEncoding](https://github.com/chronoxor/FastBinaryEncoding) - Fast Binary Encoding is ultra fast and universal serialization solution for C++, C#, Go, Java, JavaScript, Kotlin, Python, Ruby, Swift. [MIT]
*[FlatBuffers](https://github.com/google/flatbuffers) - A Memory efficient serialization library. [Apache2]