A fast & densely stored hashmap and hashset based on robin-hood backward shift deletion

Reading, writing, and processing images in a wide variety of file formats, using a format-agnostic API, aimed at VFX applications.

C++ Mathematical Expression Parsing And Evaluation Library https://www.partow.net/programming/exprtk/index.html

A library containing general purpose C++ utils.

A low overhead nanosecond clock based on x86 TSC

FlatBuffers Compiler and Library in C for C

ObjectBox Generator based on FlatBuffers schema files (fbs) for C and C++ (more languages in the future)

Google's common Java, C++ and JavaScript library for parsing, formatting, and validating international phone numbers.

A modern C++ base64 encoder / decoder

Embedded Template Library

Sane C++ Libraries